The National Center for Health Statistics reports that systolic blood pressure for males 35 to 44 years of age have a mean of 128. The medical director in a large hospital found that the mean blood pressure of 16 patients is 126.07 with a standard deviation of 5. (a) Is this enough evidence to say that this group of patients has significantly lower blood pressure at a 2.5% level? (b) Also find the p-value for the test. (c) Find a 98% confidence interval for the true average blood pressure? Using the graph for part a and b.

A blood pressure test was given to 450 women ages 20 to 36. It showed that their mean systolic blood pressure was 119.5 mm Hg, with a standard deviation of 13.4 mm Hg. (a) Determine the z-score, to the nearest hundredth, for a woman who had a systolic blood pressure reading of 113.0 mm Hg.(b) The z-score for one woman was 2.04. What was her systolic blood pressure reading? (Round your answer to one decimal place.) mm Hg

What raw score for age corresponds to a z- score of +4.50, given a mean of 12.0 years and a standard deviation of 4.0 years?

In a recent awards ceremony, the age of the winner for best actor was 36 and the age of the winner for best actress was 51. For all best actors, the mean age is 43.2 years and the standard deviation is 5.3 years. For all best actresses, the mean age is 38.6 years and the standard deviation is 11.4 years. (All ages are determined at the time of the awards ceremony.) Relative to Use z scores to compare the given values. their genders, who had the more extreme age when winning the award, the actor or the actress? Explain. ..... had the more extreme age. and the z score for the actress is z = the Since the z score for the actor is z= Score T (Round to two decimal places.) U.S. adu lect five sing Table %00% 4. two of the 4. %6 23.08% 3 e fewer th. 98.61% 3. 96.67% (1) More Next %00 P Pearson Always Learning Copyright © 2022, 2018, 2014 Pearson Educati 95.24% 23min 10/18/21 10/18/21 L. 9:30am 9:53am OL %00 5min 10/08/21 10/08/21 E Notes 065 Comments States) 11:50am 11:53am %00% 26min…

In a study of facial behavior, people in a control group are timed for eye contact for a 5 minute period. They are normally distributed with a mean of 177 seconds and a standard deviation of 53 seconds. I need to find the percentage of times within 53 seconds of the mean of 177 seconds and round it one decimal place if needed.

I wanted to do a market research study estimating the average hourly wage earned by childcare workers in the bay area. How large does my sample need to be in order to have a margin of error that is less than $0.50 with a 95% confidence in the result. Assume that the standard deviation of the wages is $2 per hour.

Almost all medical schools in the United States require applicants to take the Medical College Admission Test (MCAT). On one exam, the scores of all applicants on the biological sciences part of the MCAT were approximately Normal with mean 9.4 and standard deviation 2.6. For applicants who actually entered medical school, the mean score was 10.6 and the standard deviation was 1.7. (a) What percent of all applicants had scores higher than 11?     (b) What percent of those who entered medical school had scores between 8 and 12?

The average American consumes 96 liters of alcohol per year. Does the average college student consume a different amount of alcohol per year? A researcher surveyed 15 randomly selected college students and found that they averaged 80.5 liters of alcohol consumed per year with a standard deviation of 21 liters. What can be concluded at the the α= 0.10 level of significance? a. The test statistic= (please show your answer to 3 decimal places.) b. The p-value =(Please show your answer to 4 decimal places.