Show your work to determine how many people should be surveyed

Q: A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm…

A:

Q: suppose the Japanese Health Authority conducts a country wide survey to assess if men or women have…

A: Given  n1=590, n2=400, p1cap=0.5, p2cap=0.45 alpha=0.05 We want to find 91.98 CI for difference in…

Q: Example: construct 95% confidence interval for a population mean, if a sample of size 9 gave X = 13…

A: Given :X¯=13S=3n=9confidence level = 95%Level of significance :α=0.05The formula for confidence…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 445 green…

A: a. Construct a 90​% confidence interval to estimate of the percentage of yellow peas.b. It was…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 439 green peas…

A:

Q: 3) A corporation employs 148 sales representatives. A random sample of 60 of them was taken, and it…

A: The sample proportion is computed as follows,

Q: A survey asked senior executives at large corporations their opinions about the economic outlook for…

A:

Q: Assume that 66 % of single women and 81.9 % of single men own cars. Also assume that these estimates…

A: Given data, p1=66%=0.66 n1=1640 p2=81.9%=0.819 n2=1800 z-value at 99% confidence is Zc=2.576

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 449 green peas…

A: Construct a 95​% confidence interval to estimate of the percentage of yellow peas. Find…

Q: Create a 95% confidence interval for the proportion of U.S. adults who live with one or more chronic…

A: Here Given proportion of Us adults report that they live with one more chronic conditions=P¯=0.45…

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: 3. In a 2009 Gallup Poll, 441 of 507 adults said it was "morally wrong" to clone humans. Assume…

A: Solution : Given :  x = 441              n = 507 Sample proportion is, p = xn = 441507     = 0.8698…

Q: Can you construct a 99% confidence interval for the difference between the true average packaging…

A: Machine A Machine B 42.1 42.7 41.3 43.8 42.4 42.5 43.2 43.1 41.8 44 41 43.6 41.8…

Q: It is generally assumed that alcohol consumption tends to make drinkers more impulsive. However, a…

A: The data set contains : Column 1 : Group number  1 = Remainder sober 2 = Flavored drinks with not…

Q: cted in a very small community in country X to see if residents are for or against a new policy that…

A: The sample proportion is computed as follows,  The critical value for z for a 90% confidence level…

Q: 1. Out of 1,500 licensed drivers, 900 admitted that they do not like to drive at night. What is the…

A: *As per company guidelines,  we are supposed to only answer 3 subparts. For next parts kindly…

Q: Two different simple random samples are drawn from two different populations. The first sample…

A: The following is the formula for the difference of two populations                          i.e.,…

Q: All hypotheses are two-tailed. Please analyze the following data and type up an APA discussion.…

A: Given information: Participant Region Party  Favorable Sex Age 1 1 1 56 1…

Q: A company reported that 72​% of 1691 randomly selected college freshmen returned to college the next…

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Q: A May 26, 2020 Gallop poll reported on daily stress before the COVID-19 pandemic and during it. For…

A: From the provided information, p^1=0.51n1=2263p^2=0.62n2=837

Q: Suppose we created a 90% confidence interval for B1, and wanted to use it to determine if the linear…

A: If confidence interval contains 0, then we fail to reject the Null.    Hence, only first interval…

Q: A recent study randomly selected women from various countries around the world and collected…

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Q: 2. A random sample of 100 students was taken to determine interest in switching to a quarter system…

A: It is given that sample size (n) is 100 and x=73.

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 431 green peas…

A:

Q: Two different simple random samples are drawn from two different populations. The first sample…

A: From the information, given thatLet p1 denote the population proportion of sample 1.Let  p2 denote…

Q: Based on his research using non-probabilistic sampling methods, Prof. Gersch’s brother constructs…

A: Given information: Given that Prof. Gersch constructs a 95% confidence interval based on his…

Q: A company selling a new econometrics software advertises it with the following slogan: “students…

A: Given: n = 12 α = 0.05   Formula Used: Test-statistic t = X-μsn

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 431 green peas…

A:

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 424 green peas…

A: The question is based on a confidence int. of a popl. prop. Given : Total no. of green peas ( y )=…

Q: If we were to ask for a minimum sample size for a 94% level of confidence what would the value for…

A: Confidence Level = 0.94

Q: input the smallest whole number (no decimal) that would fall outside a 95% confidence interval?  It…

A: Let  be the population mean.Given that,Sample mean Standard error of the mean Confidence level

Q: Determine the value of the z* multiplier that would be used to compute an 75% confidence interval…

A: Determine the value of the Z* multiplier that would be used to compute an 75% confidence interval…

Q: A survey asked senior executives at large corporations their opinions about the economic outlook for…

A:

Q: Part 1 of 3: Insurance companies are interested in knowing the population percent of drivers who…

A:

Q: 2. A large university conducted a sample survey of 100 first-year students and 100 seniors. Both…

A: given that,sample one, x1 =32, n1 =100, p1= x1/n1=0.32sample two, x2 =38, n2 =100, p2=…

Q: In 2019, the poverty rate in the U.S. was 10.5%. A local official wants to test whether their county…

A: From the provided information, Sample size (n) = 2000 The hypotheses can be constructed as: H0: p =…

Q: A survey asked senior executives at large corporations their opinions about the economic outlook for…

A: From the provided information,

Q: Suppose a well-designed and executed survey was performed to estimate the proportion of a population…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: You are working as an assistant to the dean of institutional research at your university. The dean…

A:

Q: following bar graph shows the distribution of pennies, kels, dimes, and quarters in a piggy bank.…

A: Given:  The graph is as below

Q: How would you describe each distribution?

A: here given, Two stores sell watermelons. At the first store the melons weigh an average of 22…