It is said that happy and healthy workers are efficient and productive. A company that manufactures exercising machines wanted to know the percentage of large companies that provide on-site health club facilities. A sample of 240 such companies showed that 97 of them provide such facilities on site. Construct a 90 % confidence interval for the percentage of all such companies that provide such facilities on site. What is the margin of error for this estimate? Round your answers to one decimal place.

Q: Suppose​ that​ 18% of a random sample of 2307 Miami residents said that they will donate blood in…

A: we have given that sample size =n=2307 ,sample proportion =p^=18%=0.18

Q: Problem 3. The Associated Press (October 9,2002) reported that in a survey of 4722 American…

A: The independent variable is American youngsters aged 6 to 19 years. The dependent variable is…

Q: 2. Marta has constructed three confidence intervals for a population mean using the same sample for…

A: A confidence interval estimate is an interval estimate that includes the unknown population…

Q: na survey, 25 people were asked how much they spent on their child's last birthday gift. The results…

A: Given data,

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A:

Q: Discuss the differences between confidence and probability when referring to a confidence interval.…

A: Statisticians use confidence intervals to measure uncertainty in a sample variable. confidence level…

Q: Kim wants to determine a 80 percent confidence interval for the true proportion of high school…

A: Given: Margin of error, E=0.04 Confidence level=80%

Q: You are interested in constructing a 90% confidence interval for the proportion of all caterpillars…

A: (a)   Obtain the 90% confidence interval for the proportion of all caterpillars that eventually…

Q: A magazine article conducted a survey of 1000 people in Washington State and found that 26% of the…

A:

Q: Please answer all. Thank you. A 95 percent confidence interval for the mean can be interpreted mean…

A: We have give that the statement 95% confidence interval for the mean can be interpreted

Q: line underneath the problem like this. Use the following data to answer the following problems. The…

A: Confidence Intervals:- The 95% confidence interval for the Hearing Aid group scores is [12.15,…

Q: In a survey of 3,873 adults concerning complaints about restaurants, 1,534 complained about dirty or…

A: b) Given data, n=3873 Loud or distracting diners x=1187 sample proportion p=x/n=1187/3873=0.3065…

Q: A researcher is interested in constructing a 99% confidence interval for the proportion of Alzheimer…

A: Given Information :  A researcher is interested in constructing a 99% confidence interval for the…

Q: Exercise 2 Problem 12 12 Information. You are given the data in the table on the right 21 19…

A: Solution Here is two different questions I am solving exercise 2

Q: Franchise Profits. According to Franchise Business Review, over 50% of all food franchises earn a…

A: Given: Population size, n=142 Sample size, x=81 (1) Point estimate of the proportion of casual…

Q: This was a question on my homework and I would like to know if I answered it correctly. Thank you…

A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…

Q: In a clinical trial of a certain drug, 27 subjects experience headaches among the 219 subjects…

A: From the given information,

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: Please need help with homework question

A: A) The results are said to be statistically significant if, P-value < significance level.Here,…

Q: #4. A college president commissioned a study to find the proportion of students enrolled at her…

A:

Q: Thelma and Louise are each attempting to estimate the proportion of adults who enjoy listening to…

A: Given that.  p=0.29 C.I for Thelma's=(0.242 , 0.338) C.I for Louise's=(0.237 , 0.323)

Q: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

A: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

Q: In a survey, 25 people were asked how much they spent on their child's last birthday gift. The…

A:

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: Critical Value: Margin of Error: Lower Bound: Upper Bound: Interpret (context) OEM C *2 decimals *2…

A: * Hi! Thank you for the question As per the honour code, We’ll answer the first question since the…

Q: You will need your z and t charts for this  Death penalty: A group claims that the overall feelings…

A: The question is about confidence interval.Given :No. of interviewed people ( n ) = 643No. of people…

Q: A smart phone manufacturer is interested in constructing a 99% confidence interval for the…

A:

Q: Cora wants to determine a 90% confidence interval for the true proportion of high school students in…

A: Confidence level=90%Margin of error(E)=0.02Assuming that we have no prior estimate of the proportion…

Q: Suppose a sample of 779 tenth graders is drawn. Of the students sampled, 202 read at or below the…

A: In question, Given that a sample of 779 tenth graders is drawn. Of the students sampled, 202 read at…

Q: Several years ago, 50% of parents who had children in grades K-12 were satisfied with the quality of…

A: Given Data Sample Size, n = 1105 Number of successes, x = 491.0 confidence…

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A: It is given that sample size (n) is 437 and x is 59.

Q: Suppose the standard deviation of the losses had been $3600 instead of $1800. What would the larger…

A:

Q: In a simple random sample of 1600 young people, 85% had earned a high school diploma. Complete parts…

A: a) The point estimate of population proportion is sample proportion. The point estimate is as…

Q: 90% confidence the proportion and caterpillars thất tived to become a butterny is between b. If many…

A: n = 377 p = 42/377 =0.1114

Q: You saw back in Chapter 2 that the mean, median, mode, and midrange are used to indicate where data…

A: Given data: Set A: 50, 50, 50, 50, 50, 50, 50, 50, 50, 500 Set B: 20, 25, 30, 35, 40, 45, 100, 100,…

Q: If we find a 95% confidence interval using a sample, then we can say... 95% of individuals will fall…

A: Given that:A 95% confidence interval using a sample is obtained.To find:The interpretation of this…

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.