3) A corporation employs 148 sales representatives. A random sample of 60 of them was taken, and it was found that, for 34 of the sample members, the volume of orders taken this month was higher than for the same month last year. Find a 90% confidence interval for the population proportion of sales representatives with a higher volume of orders.

Q: In statistical comparisons, a p-value represents the likelihood that an observation was merely due…

A: This question is asking us to examine Table 1 in a research article and determine which…

Q: As part of the Pew Internet and American Life Project,, researchers conducted two surveys in late…

A: Given: n1= 800 ,x1= 584 n2= 2253 ,x2= 1059 At 95.0 % confidence level , z score= 1.96 Need to find…

Q: In your work for a real estate company, you find that in a sample of 1762 home buyers, 722 found…

A: Given Data: x=722 n=1762   p^=7221762=0.4098

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A:

Q: Researchers conducted a study of smartphone use among adults. A cell phone company claimed that…

A: . Find a 95% confidence interval for the difference in proportions between white and African…

Q: A medical director needs to know the proportion of patients who have a single bed in their room. A…

A: It is given that sample size (n) is 200 and p-hat value is 0.59.

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: sample size(n)=16Mean()=45.3standard deviation(s)=7.9significance level()=0.05

Q: A sample of 500 nursing applicants included 80 men.  Determine the 95% confidence interval for the…

A:

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: The objective of this question is to test the claim of a customer that it takes more than 40 minutes…

Q: A random sample of 75 college students of MSU is selected and 16 are found to have motorcycles on…

A: From the given information, The sample size is 75. Out of 75 students, 16 are found to have…

Q: It is believed that 11% of all Americans are left-handed. A college needs to know the number of…

A: 1. Here the parameter of our interest is proportion of left handed American (p) 2. Our null…

Q: A survey found that out of 900 workers, 150 said they were interrupted by frank phone calls. Find…

A:

Q: A sample of 500 applications to a nursing programme included 400 applications from women with the…

A: Given Information: Sample size n=500 If 400 were applications from women, then 500-400=100…

Q: In a sample of 300 people, 154 said that they watched news on television. Find the 90% confidence…

A: According to the given information in this question We need to find the 90% confidence interval of…

Q: A statistical study is made to compare the % of smokers in small rural towns to the overall smoking…

A: Given Information:n=1500x=285c=95%=0.95

Q: In a study by Sallie Mae and Gallup, 323 of the 1404 respondents said that they paid for their…

A:

Q: A survey found that 33 of 66 randomly selected women and 37 of 66 randomly selected men follow a…

A:

Q: Of 400 randomly selected medical students, 21 said that they planned to work in a  rural community.…

A:

Q: The following table shows the results of a survey in which 1017 adults from the United States, 1060…

A: (1)

Q: Most married couples have two or three personality preferences in common. A random sample of 384…

A: Obtain the 95% confidence interval for the difference between two population proportions. The 95%…

Q: A survey of 300 women shoppers found that 17% of them shop on impulse. What is the 80% confidence…

A: From the provided information,A survey of 300 women shoppers found that 17% of them shop on impulse.…

Q: In a random sample of 500 people aged 20-24, 20% were smokers. In a random sample of 450 people aged…

A:

Q: A doctor would like to estimate the mean difference in the number of hours of sleep for seniors in…

A: Random sample of 50 high school seniors  Random sample of 50 seniors from the colleges in his county…

Q: A poll of 5000 residents in Brazil, Canada, China, France, Malaysia, South Africa, and the United…

A: From the provided information, Sample size (n) = 5000 805 of the responses, was doctors, nurses, and…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: Formula :

Q: A doctor claims that the mean number of hours of sleep that seniors in high school get per night…

A: From the provided information, The claim is that the mean number of hours of sleep that seniors in…

Q: Of the 1,000 people, 550 people used company s's smartphone and 460 people used company a's…

A: Given: n= 1000 ,x= 550.0 At 95.0 % confidence level , z score= 1.96 Need to find confidence…

Q: A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made…

A:

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: The company advertises that a technician will arrive within 60 minutes after a service call placed.…

Q: A study of 1907 traffic fatalities found that 725 were alcohol related. Suppose you want your 99%…

A: Given information Total number of traffic fatalities(n) = 1907 Number of fatalities, alcohol related…

Q: In a random sample of 120 large retailers, 85 used regression as a method of forecasting. In an…

A: Solution: Let X1 be the number of large retailers used regression as a method of forecasting, X2 be…

Q: A genetics is interested in the proportion of African males who have a certain minor blood disorder.…

A: From the provided information, Sample size of African male (n) = 100 Number of male who are found to…

Q: In a survey of 32 students at a local high school, 17 support changing the schools mascot. Find the…

A:

Q: Suppose that in a sample of 5274 customers at a food store, 2468 food shop more than once a week.…

A: From the provided information, Sample size of customers (n) = 5274 Out of which 2468 food shop more…

Q: In a study of 150 burglary incidents witnessed by the youngsters, 43% lead those young people…

A: The sample size is 150 and of which 43% lead those young people develop PTSD.

Q: In a certain state, a survey of 500 workers showed that 38% belonged to a union.  Find the 93%…

A: Computation of critical value: 1-α=0.93α=0.07α2=0.0351-α2=0.965 The critical value of z-distribution…

Q: manufacturer of a consumer electronics product expects 2% of units to fail during the warranty…

A: Given data, p=2%=0.02 n=500 expected number of failures=?

Q: study of 30 college students showed that 25 are binge watching series. Find a 95% confidence…

A: given data  n = 30  x = 25 95% ci for p  = ?

Q: 50 of the 600 medical students who were chosen at random stated they intended to work in a rural…

A: Given that  Sample size n =600 Favorable cases x =50 Sample proportion p^=x/n =50/600 =0.0833