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Assume I have an imaginary, fair, eight-sided die, with faces numbered 1-8, and assume that rolls and outcomes are independent. What would the
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Suppose you teach a course in statistics and you grade on the curve (the normal curve, that is). You have given a final exam to your statistics class...
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please help with the picture questions and there are 10 of them
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It is said babies are born according to a uniform distribution. That means that it is equally likely for a baby to be born at any time during a 24...
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The revenue function R(x) and the cost function C(x) for a particular product are given. These functions are valid only for the specified range of...
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Here are the IQ test scores of 31 seventh- grade girls in a Midwest school district:
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Explain the purpose of a null hypothesis. Why are both a research/alternative hypothesis and a null hypothesis necessary in statistics?
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What is the Mean Absolute Deviation (MAD) for the Exponential Smoothing Approach (alpha = 0.80) for years 1 - 5?
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At a local college, 118 of the male students are smokers and 472 are non-smokers. Of the female students, 200 are smokers and 300 are non-smokers.
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nstructions Locate a standardized measurement instrument used in your specialization or area of interest, and then critique.
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An automobile manufacturing plant produced 29 vehicles today: 9 were sedans, 10 were vans, and 10 were trucks. Plant managers are going to choose two...
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Locate a standardized measurement instrument used in your specialization or area of interest, and then complete a critique.
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committee consisting of 3 faculty members and 4 students be formed if there are 8 faculty members and 11 students eligible to serve on the committee?...
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Americans consume an average of 1.66 cups of coffee daily. assume american coffee consumption is normally distributed with a standard deviation of...
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An urn contains 8 green and 6 white balls. Four balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the...
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At a local college, 178 of the male students are smokers and 712 are non-smokers. Of the female students, 400 are smokers and 600 are non-smokers.
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A chi-square goodness-of-fit test is always conducted as: a left-tail test. a right-tail test. a two-tail test. the answer depends of whether the...
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Kingsnorth et al. (2002) examined the case processing time (in days) from arraignment to disposition for cases processed by the Sacramento County...
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What is the easiest way to remember how to calculated conditional probability?
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3. The 10th Annual Health Care in Canada Survey is a survey of the Canadian public's and health care providers' opinions on a variety of health care
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A state lottery randomly chooses 8 balls numbered from 1 through 42 without replacement. You choose 8 numbers and purchase a lottery ticket.
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Each participant in the study was assigned to a group (Group 1, Group 2, and Group 3). Since the ANOVA was significant, pairwise comparisions were
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A one-way analysis of variance was conducted to evaluate the null hypothesis that there is no difference high school students' level of satisfaction
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A recent study investigated tractor skidding distances along a road in a forest. The skidding distances (in meters) were measured at 20 randomly...
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Use R markdown For this problem we will use the birthwt dataset that is available in the MASS package (recall how to access it by looking at past...
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32 Running and sleep. Sufficient sleep is important for adolescents for both their neural and psychological development.
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In a test of the hypothesis H0: =10 versus Ha: 10 a sample of n=50 observations possessed mean =10.7 and standard deviation s =2. Find and interpret...
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The ratings for "driving distance off the tee" for the top 10 golfers on the PGA Tour are as follows: Player Value (yards) Rank Prev Rank 1 1 Scott...
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Use the data in the table to answer Questions 26 through 28. x 3 1 4 4 5 y 2 -2 5 4 8 26. Determine SSxx, SSxy, and SSyy. Find the equation of the...
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In pharmacologic research a variety of clinical chemistry measurements are routinely monitored closely for evidence of side effects of the medication...
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Calculate the 20th, 50th, and 80th percentiles for the following data set: (Do not round intermediate calculations. Round your answers to 1 decimal...
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quot;The brand of refrigerator in a homequot; is a: Nominal variable B: Continuous variable C: Discrete variable D:
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During regular operations, an average gas station in Puerto Rico receives 30 customers every hour and can serve 45 customers each hour.
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2) A study is conducted in patients with HIV. The primary outcome is CD4 cell count which is a measure of the stage of the disease. Lower CD4 counts...
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Two liter plastic bottles used for bottling cola are shipped in lots of 100. Suppose the lots are 5% defective. What is the probability that a
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An executive drives from his home to his office in the city. The driving times are normally distributed with a mean of 35 minutes and a standard...
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If there are 1296 elementary events regarding the rolling of a die. How many times was the die rolled?
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One researcher wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin error of 0.28 hour is...
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The graphs below show the scores students in an advanced statistics course received for homework completed and the subsequent midterm exam.
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Assume that the distribution of scores in a Math test is normal, with = 100 and = 10. What is the probability that: A score is 125?
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In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a mean of 69.3 inches and a standard deviation of...
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a debate team of 4 is to be chosen from a class of 35. There are two twin brothers in the class.
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6 - Amazing Bakers sells bread to 40 supermarkets. It costs Amazing $1,250 per day to operate its plant. The profit per loaf of bread sold in the...
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An MBA student classifies the subjects in her academic curriculum into two categories: quantitative (e., Business Modeling, Corporate Finance), and...
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An investment strategy has an expected return of 8 percent and a standard deviation of 6 percent. Assume investment returns are bell shaped.
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What is the standard deviation of following scores. There are 31 scores and need standard deviation for sample.
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The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is mound-shaped and symmetric with a mean of...
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A file cabinet manufactor estimates that 5% of it's file cabinets will have drawers that close improperly. Assume a production of 120 cabinets is...
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The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days and a standard deviation of 14 days.
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if perry bought 1/2 of an apple, and sally bought 1/3 of an apple, who bought the greater amount of apples?
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