During a blood-donor program conducted during finals week for college students, a blood-pressure reading is taken first, revealing that out of 300 donors, 43 have hypertension. All answers to three places after the decimal. 1)  A 95% confidence interval for the true proportion of college students with hypertension during finals week is (___ ,___ ) 2) We can be 80% confident that the true proportion of college students with hypertension during finals week is____, with a margin of error of ____.

Q: 7. (Sec. 7.2) In a survey of 2004 American adults, 501 of them said that they believed in astrology…

A: Introduction:The 100 (1 – α) % confidence interval for the population proportion, π is: (p – (zα/2­)…

Q: A  95% confidence interval for the  proportion of voters who say "they want change" is computed and…

A: From the provided information, Confidence level = 95% Confidence interval for the proportion is…

Q: A scientist wondered if there was a difference in the average daily intake of dairy products between…

A: Reviewing information, X : Daily intake of dairy products of MenY : Daily intake of dairy products…

Q: A  95% confidence interval for the  proportion of voters who say "they want change" is computed and…

A: For the population proportion, the confidence interval can be computed using the formulae: C.I=p⏞±E…

Q: National Identity and Birthplace People from different countries who believe national identity is…

A: The CI for a true population proportion is, p^±Zp^(1-p^)nwhere p^=sample proportion…

Q: A psychiatrist is interested in finding a 95% confidence interval for the tics per hour exhibited by…

A: Given Information: n = 12 7 9 7 10 1 6 8 7 2 12 7 9 For the data, summary statistics can be obtained…

Q: In a survey on supernatural experiences, 722 of 4019 adult Americans surveyed reported that they had…

A: Given : Sample Size, n = 4019 Number of successes, x = 722 confidence level,c=0.9

Q: Over half of all American teens (ages 12 to 17 years) have an online profile on at least one social…

A: Given data is appropriate for testing of hypothesis for single proportion . Because it is a large…

Q: An accounting firm has 1,190 clients. From a random sample of 119 clients, 108 indicated very high…

A: Given:

Q: ind a 95% confidence interval for the difference between the two proportions.   b) Is there a…

A: Let p1 and p2 be the two population proportions of people who said that it is serious.Given…

Q: A random sample of n1 = 229 people who live in a city were selected and 105 identified as a "dog…

A:

Q: he lower end of the 95% confidence interval is Question Blank 1 of 2and the higher end of the 95%…

A: n=8 Sample sizex= 9.8 Sample mean s= 0.4 Sample standard deviation

Q: A simple random sample of 120 vet clinics in the Midwest reveals that the vast majority of clinics…

A: Given that; Sample size (n) = 120  X = 88  At 90% confidence interval .

Q: A sample of size 84 was taken from a very large population. Sample statistics, x¯ and s, were used…

A:

Q: In a random sample of 500 Americans, 50% indicated that they have a cat for a pet. Estimate with 95%…

A: Given information

Q: A random sample of high school students is used to estimate the mean time all high school students…

A: Solution: From the given information, a 99% confidence interval is 1.7 hours to 3.1 hours.

Q: A random sample of n₁ = 276 people who live in a city were selected and 112 identified as a "dog…

A: given data n1 = 276  x1 = 112p^1 = x1n1 = 112276 = 0.4058       n2 = 117  x2 = 70p^2 = x2n2 = 70117…

Q: Out of 800 adults selected randomly from one town, 272 have health insurance. Find a 90% confidence…

A: Given,   The sample proportion is,

Q: In a sample of 85 statistics students, 41 said that finding confidence intervals for population…

A: It is given that x is 41 and sample size (n) is 85. The confidence level is 0.99.

Q: A random sample of n₁ = 213 people who live in a city were selected and 91 identified as a "dog…

A: n1=213x1=91n2=120x2=67α=1-0.90=0.10

Q: . Jordan operates a dental practice with 315 patients and she would like to estimate the proportion…

A: Given X=30 n=75 Significance level=1-0.90=0.10

Q: A random sample of 500 patients with diabetes were weighed before and after switching to a new drug…

A: The objective of the question is to determine the 95% confidence interval for the average change in…

Q: 5. At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A…

A: It is given that  For sample 1: Favourable cases, X1 = 259 Sample size, n1 = 316 For sample 2:…

Q: According to data from Cosmopolitan magazine, 64% of Americans say there is never enough time in the…

A: From the given information, According to data from Cosmopolitan magazine, 64% of Americans say there…

Q: 42. Show that in Example 4.4.7, page 153, the difference between the two candidates is statistically…

A: Here, we have to show that the difference between the two candidates is statistically significant…

Q: Which of the following would result in the widest confidence interval? A sample size of 100 with…

A: Which of the following would result in the widest confidence interval? A sample size of 100 with…

Q: 7. A recent survey of 500 women indicated that 29% of women over age 55 in the study were widows.…

A: Givensample size(n)=500p^=29%=0.29confidence level=90%

Q: According to a Field Poll, 254 out of 409 of California adults feel that "education and our schools"…

A: From the given information, Consider, X denotes the number of adults feel that "education and our…

Q: a) What proportion of workers answered yes to the survey? b) What was the margin of error?

A: Here, the 95% confidence interval for the proportion of workers that answered 'yes' is (0.62, 0.73).…

Q: A research study reported a 95% confidence interval for the mean time of hip surgeries based on a…

A: Given that :  95% confidence interval is (116, 138)

Q: suppose a random sample of 50 basketball players have an average height of 78 inches. Also assume…

A: Solution: Let X be the random variable defined as the height of a basketball player. Sample size: n…

Q: A new drug to treat high cholesterol is being tested by pharmaceutical company. The cholesterol…

A: We have given information, The cholesterol levels for 27 patients were recorded before administering…

Q: Consider another brand C of car tyres. From a random sample of 36 car tyres, it has been found that…

A: