subject
Mathematics, 28.03.2020 02:58 kellyzeissss1286

The average systolic blood pressure was found to be 140 mm for people who have high responsibility jobs, specifically investment banking jobs. Heart attack is the leading cause of death in the US, and the American Medical Association (AMA) deems average systolic blood pressure of 140 mm as very high. The fitness instructors and AMA doctors recommend practicing Yoga. They believe that practicing yoga reduces blood pressure and hence is beneficial to people. To test this claim, a sample of 51 investment bankers who had previously been diagnosed with high blood pressure was chosen. Participants were trained and completed yoga exercises for six months. At the end of the six months, the average blood pressure for the sample was 139 mm with a standard deviation of 5 mm.

What would be the proper set of hypotheses?

Group of answer choices

A. H0: μ = 139, H1: μ ≠ 139
B. H0: μ = 140, H1: μ < 140
C. H0: μ = 140, H1: μ ≠ 140
D. H0: μ = 139, H1: μ < 139

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 22.06.2019 00:10
Is the number 128.439 a rational number
Answers: 2
question
Mathematics, 22.06.2019 02:00
John kept track of how many baskets were made in a basketball game. after 4 minutes, 5 baskets were made. how many baskets were made between 9 and 10 minutes? a. 0 b. 1 c. 2 d. 3
Answers: 1
question
Mathematics, 22.06.2019 02:00
The first term of a sequence is -12. the recursive formula for the sequence is an = an-1 + 9. what are the next 3 terms in the sequence? a) -3, -15, -27 b) -3, 6, 15 c) -3, -6, -3 d) -3, -6, 3
Answers: 2
question
Mathematics, 22.06.2019 02:30
According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.
Answers: 3
You know the right answer?
The average systolic blood pressure was found to be 140 mm for people who have high responsibility j...
Questions
question
Mathematics, 26.02.2020 20:50
Questions on the website: 13722367