The percentage of adults who have at some point in their life been told that they have hypertension is 23.53%. Ina sample of 11 adults, let X be the number who have been told that they have hypertension. Consider thefollowing probability distribution for X.XP(x)?????012345a6 0.020570.004580.000790.0001100.0000110.0000(a) Find the missing entry that is labelled as 'a'.(b) Suppose that a group of 11 adults are randomly selected, and 6 of them have been told that they havehypertension. Is this a significantly high number that would suggest that the given percentage of adults whohave been told that they have hypertension (i.e., 23.53%) is not correct?

The percentage of adults who have at some point in their life been told that they have hypertension…

Answered: (a) Find the missing entry that is…

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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At a certain stage of a criminal investigation, the inspector in charge is 60 percent convinced of the guilt of a certain suspect. Suppose now that a new piece of evidence that shows that the criminal has a certain characteristic (such as left-handedness, baldness, brown hair, etc.) is uncovered. If 20 percent of the population possesses this characteristic, how certain of the guilt of the suspect should the inspector now be if it turns out that the suspect is among this group?
Suppose that 6% of a particular population have a particularly nasty disease. There is a test for the disease that correctly identifies those with the disease 98% of the time. However, the same test gives a false positive 1% of the time. Suppose that a random person from this population is given the test as part of a wellness exam. Give answers in decimal form rounded to 4 decimal places as needed. A. Suppose that a random person comes in for a wellness exam and tests positive for the disease. What is the probability that she actually has the disease? B. Suppose that a person comes in for a wellness exam and tests negative. What is the probability that this person does not have the disease? C. What proportion of the total population will test positive? D. What proportion of the total population will not have the disease and will test negative?
4. Students in Miss Bigelow's English class completed a vocabulary test worth 100 points, and, interestingly, all students received different scores on this test. When Miss Bigelow summarized the test scores, she obtained the following: Minimum = 25 points, Q, = 59 points, Median = 78 points, Q3 = 87 points, and Maximum = 100 points. If Kami's score on this test is at the 40th percentile, what does this mean? A. Kami's test score is between 25 points and 59 points. B. Kami's test score is between 59 points and 78 points. C. Kami's test score is between 78 points and 87 points. D. Kami's test score is between 87 points and 100 points. E. Kami had a higher test score than 60% of her classmates.
7. A population has = 60 and = 10. Find the z-score corresponding to each of the following sample means: a. A sample of n = 4 with M = 55. b. A sample of n = 25 with M = 64 c. A sample of n = 100 with M = 62
Consider a random sample of 300 students in a university, 75 of them declared that they like playing football. Compute a point estimate of the proportion of all students who would like to play football.
7. In a sample of n= 6, five individuals all have scores of X= 10 and the sixth has a score of X=16. What is the mean for this sample?
Fifteen years ago, a complete survey of all undergraduate students at a large University indicated that the average student smoked 7.7 cigarettes per day. Th director of the student health center wishes to determine whether the incidence of cigarette smoking at his University has lessened over the fifteen year period. He obtains the following results (in cigarettes smoked per day) from a random sample of 9 students. 6.1, 9.2, 5, 6.3, 4.8, 3.2, 7.6, 8.1, 9. Test the null hypothesis at the .05 level significane.
Suppose the manager of a shoe store wants to determine the current percentage of customers who are males. How many customers should the manager survey in order to be 92% confident that the estimated (sample) proportion is within 8 percentage points of the true population proportion of customers who are males? z0.10 z0.05 z0.04 z0.025 z0.01 z0.005 1.282 1.645 1.751 1.960 2.326 2.576 Use the table of values above.
5.35 Cyberbullying, continued. Refer to Exercise 5.33. a. What is the expected number of undergraduates in your sample who say that they have received hurtful comments online in the past 30 days? What is the expected number of undergraduates who say that they have not received hurtful comments online in the past 30 days? What do the two means add up to?
In a previous poll, 38% of adults with children under the age of 18 reported that their family ate dinner together seven nights. suppose that, in a more recent poll, 399 of 1099 adults with children under the age of 18 reported that their family ate dinner together seven nights a week. is there sufficient evidence that the proportion of families with children under the age of 18 who eat diner together seven nights a week has decreased? use the a=0.05 significance level
The Substance Abuse and Mental Health Services Administration (SAMHSA, 2017) estimates that 10.9% of the population of the United States age 18–24 had an episode of depression in the previous 12 months. Suppose a researcher takes a random sample of 225 United States adults aged 18–24. Determine the value of the sample proportion, p, such that 5% of samples of 225 United States adults age 18–24 are greater than p. You may find software or a z-table useful. Give your answer precise to three decimal places. p = II
suppose you select a simple random sample of 75 douglas college student and you find that 8 are left handed what is the best point of estimate of p, the proportion of all douglas college students who are left handed

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