A manager needs to know the proportion of employees who have insurance. He selects 200 employees and finds that 118 of them have insurance. Find a 95% confidence interval for the proportion of employees who have insurance.   a. 0.59 ± 0.002   b. 0.59 ± 0.005   c. 0.59 ± 0.068   d. 0.59 ± 0.474

Q: determine whether the statement is true or false. If the statement is false, rewrite it as a true…

A: Least-squares regression line : A curve whose main aim is  to lower the sum of squares of distances…

Q: The correct value of Z to use for an 80% confidence interval for is: O A. 1.96 О В. 1.28 O C. 2.33 O…

A:

Q: Let  c=0.99, x=74.76, s=4.47 and n=27. Construct a confidence interval for the population mean…

A: Solution

Q: Calculate the​ 95% confidence intervals for the proportion of children​ surviving, and the…

A: Given information: Count = 711 Adult/Child Frequency Relative Frequency Adult 654 0.91983122…

Q: there is no relationship between age and job satisfaction in hypothesis in a formula form

A: The relationship between two variable is denoted by correlation. Correlation testing is the test of…

Q: fashion designer wants to know how many new dresses women buy each year.  A sample of 502 women was…

A:

Q: Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an…

A:

Q: The 95% confidence interval of the average monthly bill for female is between 72.9334 and 0.61.5466.

A: The confidence interval is the interval range in which represent true value within it. It is…

Q: In a survey of 3700 TV viewers, 834 said they watch network news programs. Find the margin of error…

A: Solution

Q: Professor Jones took a random sample of 8 students and asked them how many times per week they dine…

A: Number of students n=8  x: 2 , 2 ,3 ,4 , 5 , 5 , 6 ,7

Q: Find a 95% confidence interval for a mean, µ, where n = 324, x̄ = 2.7, s = .91, and se = .06.

A: Given: n = 324, x̄ = 2.7, s = .91, se = .06.

Q: Construct the confidence interval for the population mean μ.   c=0.98​, x=16.3​, σ=5.0​, and n=85

A: In question, We'll construct the confidence interval for population mean. When, c=0.98, x=16.3,…

Q: In developing an interval estimate for a population mean, a sample of 50 observations was used. The…

A: [Note: “Since you have posted multiple questions, we will provide the solution only to the first…

Q: A poll of n = 500 randomly selected elementary school students resulted in 110 of them stating…

A:

Q: Find the margin of error for the 95% confidence interval used to estimate the population proportion.…

A: Confidence level = 95% Sample size (n) = 2440 Sample proportion (p̂) = 0.70

Q: Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an…

A: The question is about sample size estimation Given : Sample std. deviation ( s ) = 43.4 minutes…

Q: For a sampling distribution of n = 500 and population proportion of 0.48 of those who prefer cookies…

A:

Q: The following sample data are from a normal population: 11, 9, 13, 16, 14, 12, 7, 6.   What is the…

A:

Q: In terms of z scores, a 95% confidence interval consists of which of the following ranges? 1. ±1 z

A: Given, Z=x-μσ where, x= observed value μ=mean of the sample σ=standard deviation

Q: To estimate the proportion of smoker a sample of 100 men was selected. In the selected sample, 40…

A:

Q: A researcher is interested in a 95% confidence interval. It is found to have a point estimate of 2.5…

A: From the provided information, Confidence level = 95% Point estimate = 2.5 Margin of error (E) = 0.6

Q: You measure the weights of a simple random sample of 64 people from a population. The sample mean is…

A: Provided information is ; sample size(n) = 64 sample mean(x¯ ) = 55 kg Population standard deviation…

Q: 21. What is the 98% confidence interval for the difference in population means, p1 – p2 given the…

A: Let p1 denotes the population proportion for population 1 and p2 denotes the population proportion…

Q: Construct the confidence interval for the population mean y. C= 0.90, x=16.6, o= 10.0, and n= 80

A: Here, C=0.90, x=16.6, σ=10.0, and n=80.

Q: If a sample proportion is 0.66, which of the following could be a 90% confidence interval for the…

A: Solution

Q: The baseball coach tracked how long it took 8 of his players to do a series of drills.  The times…

A: We have given the times recorded (in minutes) of 8 players.

Q: Suppose someone wanted an 75%-confidence interval. What value of z should they use? Choose the…

A: Level of significance ɑ=0.25

Q: What is the perimeter of a square with side lengths of 11 meters and 7 meters?

A: Solution: The perimeter of a square is calculated by using the following formula:

Q: Let  c=0.99, x=74.76, s=4.47 and n=27. Construct a confidence interval for the population mean u…

A: The objective of this question is to construct a confidence interval for the population mean using…

Q: Example: A sample of 10 measurements of the diameter of a sphere has a mean x = 4.38 cm and a…

A:

Q: FIND t a n = 15 for the 98% confidence interval for the mean.

A: Provided information that, n=15 Alpha (α)=1-0.98=0.02 α/2=0.01

Q: Suppose you calculate a 95% confidence interval for a proportion to to be: 0.39 to 0.78. Determine…

A: Given,   Lower bound = 0.39​ Upper bound = 0.78   Here, we use to determine the margin of error.

Q: Out of 200 people sampled, 140 had kids. Based on this, construct a 90% confidence interval for the…

A: Given data,n=200x=140p=xn=140200=0.70z-value at 90% confidence is Zc=1.645

Q: f n=200 and X=80​, construct a 99​% confidence interval estimate for the population proportion.

A:

Q: We want to determine if the true proportion of students who do aerobics is less than 45%. Which are…

A: Suppose P is the true proportion of students who do aerobics.

Q: Out of 600 people sampled, 534 had kids. Based on this, construct a 95% confidence interval for the…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.