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Problem 2-A on Ch 12- The National Sleep foundation determines whether hours of sleep per night are independent of age based on survey data.
Problem 2-A on Ch 12- The National Sleep foundation determines whether hours of sleep per night are independent of age based on survey data. A sample of 500 individuals is used on a test of independence. Using a 0.05 level of statistical significance, test whether hours of sleep are independent of age. The hypothesis setting and table with data collected follows:
H0 : hours of sleep is independent of ageHa : hours of sleep is not independent of ageHours of Sleep less than 39 years old 40 years old, or older Total sleep hours
less than 6 hours 80 100 180
More than 6 hours 150 170 320
total for age group 230 270 500
2.1 The test statistic for this problem is..............
2.2 The critical value for this problem is.....
2.3 Refer to Problem 2.
Your decision after the test is......
a, Accept he null hypothesis
b, Reject the null hypothesis
