systolic blood pressure results from contraction of the heart. Based on past resuts from the National Health Survey, it is claimed that women have...

systolic blood pressure results from contraction of the heart. Based on past resuts from the National Health Survey, it is claimed that women have systolic blood pressures with a mean of 130.7 and a standard deviation of 23.4. A random sample of 30 women resulted in blood pressure levels with a mean of 123.5 and standard deviation of 19.5. Use a 0.05 significance level to test the claim that the sample comes from a population with a standard deviation less than 23.4.