Jina recently switched her primary doctor to one specializing in caring for elderly patients. On her new doctor's website, it says that the mean systolic bloodpressure among elderly females is 120 millimeters of mercury (mmHg). Jina believes the value is actually higher. She bases her belief on a recently reportedstudy of 22 randomly selected, elderly females. The sample mean systolic blood pressure was 124 mmHg, and the sample standard deviation was 24 mmHg.Assume that the systolic blood pressures of elderly females are approximately normally distributed. Based on the study, at the 0.05 level of significance, can itbe concluded that μ, the population mean systolic blood pressure among elderly females, is greater than 120 mmHg?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.)(a) State the null hypothesis Ho and the alternative hypothesis H₁.H₁ ☐H₁ : ☐(b) Determine the type of test statistic to use.μa☑SptDegrees of freedom:ロ=ロ O

Answered: Image /qna-images/answer/6c9578ee-6e93-4b33-8223-338242215276.jpg

Answered: Jina recently switched her primary…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one school year. The speed limit on that part of Reynolds Rd is 20 mph. The mean of the speed readings was 24.19 mph, with a standard deviation of 3.56 mph.
Yoko, who turns eighty years old this year, has just learned about blood pressure problems in the elderly and is interested in how her blood pressure compares to those of her peers. She has uncovered an article in a scientific journal that reports that the mean systolic blood pressure measurement for women over seventy-five is 133.9 mmHg, with a standard deviation of 5.9 mmHg. Assume that the article reported correct information. Complete the following statements about the distribution of systolic blood pressure measurements for women over seventy-five. (a) According to Chebyshev's theorem, at least (Choose one) ▼ of the measurements lie between 122.1 mmHg and 145.7 mmHg. (b) According to Chebyshev's theorem, at least (Choose one) measurements lie between 116.2 mmHg and 151.6 mmHg. ▼ of the X
A phormaceubcal testing company wants to test a new cholesterol drug. The mean cholesterol level of the target population is 245 mg and a standard deviation of 35 mg. The company wishes to test people who have a cholesterol level that is at least 1.5 standard deviations above the mean. What is the minimum cholesterol level needed in order for a person to be included in the study?
The standard deviation of the diameter of a sample of 23 golf balls was 0.19 centimeters. Find the 90% confidence interval of the true standard deviation of the diameter of golf balls. Please include all work showing how you found your answer.
Loretta, who turns eighty this year, has just learned about blood pressure problems in the elderly and is interested in how her blood pressure compares to those of her peers. Specifically, she is interested in her systolic blood pressure, which can be problematic among the elderly. She has uncovered an article in a scientific journal that reports that the mean systolic blood pressure measurement for women over seventy-five is 134.1mmHg, with a standard deviation of 5.9 mmHg. Assume that the article reported correct information. Complete the following statements about the distribution of systolic blood pressure measurements for women over seventy-five. (a)According to Chebyshev's theorem, at least ________% of the measurements lie between 122.3 mmHg and 145.9 mmHg. (b)According to Chebyshev's theorem, at least 56% of the measurements lie between __________ mmHg and mmHg. (Round your answer to 1 decimal place.)
The US mean height for adult men is = 68.5 inches, with a standard deviation of = 3 inches. The mean height for adult women is = 62.7 inches, with a standard deviation of = 2.7 inches. Who is taller relative to their gender, a man 75 inches tall, or a woman 68 inches tall?
A survey reported that in a recent year, the mean serum cholesterol level in milligrams per deciliter for US adults was 204 with a standard deviation of 37. A random sample of 116 adults was chosen. Find the 33rd percentile of the sample mean.
An environmental researcher took 30 water samples from different areas of a lake. He measured the pH level of each water sample. The standard deviation for the 30 pH levels was about 1.4.What is the best interpretation of the standard deviation? The pH level of a typical water sample was about 1.4 units from the mean on average. The difference between the minimum and maximum pH levels was about 1.4 units. The entire lake had a pH level that was about 1.4 units. The pH level of any given water sample was about 1.4 units from the mean. - this one is wrong
A local community college reported that the average SAT score of its students is 960 with a standard deviation of 82. If a student scored 975 on the SAT, what is the student's z score? Did the student do better or worse on the SAT compared to the average student in the college?
The average high-density lipoprotein (HDL) cholesterol level of adult females is 53 milligrams per deciliter. You want to determine whether the true mean female HDL cholesterol level is more than the average. You decide to pull a random sample of 12 adult females and measure their HDL cholesterol level. You find the sample mean is 54.1 milligrams per deciliter and the standard deviation is 1.78 milligrams per deciliter. What are the test statistic and the p-value? O The test statistic is 2.14 and the p-value is 0.0278. O The test statistic is 0.0278 and the p-value is 2.14. O The test statistic is 1.1 and the p-value is 0.0278. O The test statistic is 0.0278 and the p-value is 1.1. O The test statistic is 0.51 and the p-value is 2.14.
Willow Road and Arroyo Seco are schools in different states. The heights of students at Willow Road have a population mean of 50.4 inches and a standard deviation of 6 inches. The heights of students at Arroyo Seco have a population mean of 54.3 inches with a standard deviation of 2.3 inches. For each school, the distribution of the heights of students is clearly bell-shaped.Elsa is a student at Willow Road and is 67 inches tall. Jane is a student at Arroyo Seco and is 59 inches tall.

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