A random sample of small-business managers was given a leadership style questionnaire. The results were scaled so that each manager received a score for initiative. Suppose the following data are a random sample of these scores. 36 42 41  39 38 31 41  36 35 45 30 33 35 44 36 36 39 33 39 41  41 33 35 36 41 33 36 38 41  42 44 35 36 33 38 32 30 36 42       Assuming σ is 3.891, use these data to construct a 90% confidence interval to estimate the average score on initiative for all small-business managers.

Q: A random sample of 80 people was selected, and 22 of the selected people indicated that it would be…

A:

Q: The weight percent of silicon in six different rock samples, each containing different amounts of…

A: Given data :

Q: 5 ± $39.53 b. $127.95 ± $7.45 c. $127.95 ± $4.87 d. $127.95 ± $6.25 e. $127.95 ± $30.81

A: As sample standard deviation is unknown, the critical value can be calculated from student t…

Q: In a class of 20 students of computing, 9 are female and 11 are male. The results of first-year JAVA…

A: The provided information is x x2 48 2304 49 2401 49 2401 30 900 31 961 32 1024 35…

Q: .The following data represent the respective ages of 20 students pursuing graduate studies: 33…

A: Given data is: 33                    37                    25                    40…

Q: The following stemplot shows the swimming speeds, in kilometers per hour (km/h), for a random sample…

A: Solution: a. Let X be the swimming speed of emperor penguins. From the given information,…

Q: 34. The following data represent a sample of the assets (in millions of dollars) of 30 credit unions…

A:

Q: A sample of 200 families was randomly selected among the families living in a city and it was…

A: 17) Given that, Sample size of families Number of families who had high monthly income

Q: 6.28 The following sample of 16 measurements was se- lected from a population that is approximately…

A: Use the give data to form the excel table:   Sample x-x¯ x-x¯2   91 -6.9375…

Q: The figure to the right shows the results of a survey in which 1018 adults from Country A 1015…

A: Given Information: Country Sample size (n) Sample proportion (p^) A 1018 0.37 B 1015 0.19 C…

Q: To determine if his teaching method increases students’ learning, a professor administers a pretest…

A:

Q: A random sample of 12 students showed the following time (in hours) of sleep 4.5 5 5.5 6 6 7 7.5 7.5…

A: Given data  4.5,5,5.5,6,6,7,7.5,7.5,8,9,5,7 n=12

Q: To determine if his teaching method increases students’ learning, a professor administers a pretest…

A:

Q: To determine if his teaching method increases students’ learning, a professor administers a pretest…

A: Let d =  Pretest score - Posttest score The table of calculations is given below; No. Pretest…

Q: 1. Consider the data set below, which gives a sample of fifteen students randomly selected and asked…

A:

Q: 8. From the following data: Sample 20 15 18 12 18 14 10 20 16 1 Sample 18 12 15 10 13 15 9 18 17 2…

A: We want to test the paired t test hypothesis.

Q: A sample of 30 commuters in the New York City area yielded the following commute times in minutes:…

A: 1) a. From the given information,

Q: 34. The following data represent a sample of the assets (in millions of dollars) of 30 credit unions…

A: Given data: Sample size = 30 Confidence level = 90% To find the confidence interval for mean.

Q: The monthly incomes for 12 randomly selected​ people, each with a​ bachelor's degree in​ economics,…

A: Obtain the 90% confidence interval for the population mean. The 90% confidence interval for the…

Q: A random sample of 34 participants in a Zumba dance class had their heart rates measured before and…

A: a)

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: From the provided information, Sample size of Country B (n) = 1023 Sample proportion (p̂) = 0.22…

Q: A lawsuit claims that in a large company, the managers who are men make significantly more money…

A:

Q: The figure to the right shows the results of a survey in which 1016 adults from Country A, 1014…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: A courier service advertises that its average delivery time is less than 6 hours for local…

A: In this context, the aim is to find the average delivery time is less than 6 hours for local…

Q: 4. A random sample of the number of small businesses in various municipalities follows. Estimate the…

A: Obtain the 95% confidence interval for the mean number of small business per municipalities. The 95%…

Q: Refer to the following scenario. A govermment official is in charge of allocating social programs…

A: Given, n = 124 X = 25       To  find, For each of the following statements, specify whether the…

Q: The following data represent a sample of the assets (in millions of dollars) of 30 credit unions in…

A: Given,sample size(n)=30sample mean(x¯)=11.0907standard deviation(s)=14.4054degrees of…

Q: 8. The following sample of 16 measurements was selected from a population that is approximately…

A: Since the sample size is small and population standard deviation is unknown, t distribution can be…

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: For the given data The99​%confidence interval for the proportion of adults from Country B who say…

Q: Below are the ozone concentrations in random samples of areas of Metro Manila and the rest of…

A: Formula

Q: Following are the numbers of calories in a random sample of 10 slices of bread. Assume the…

A: The white region is the 95% interval.

Q: The following sample of 16 measurements was selected from a population that is approximately…

A:

Q: Shown below are four confidence intervals created from the same sample data. Which of these…

A:

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: For the given data Construct a 99​% confidence interval for the population proportion of adults s…

Q: A sample of 30 commuters in the New York City area yielded the following commute times in minutes:…

A: 1) a. From the given information,

Q: 3. Use the t-distribution table to determine the value of t to construct a confidence interval for…

A: For the given data Find t value = ?

Q: 2. The following are the IQ test scores of 31 randomly selected business students in a certain…

A: The sample mean and sample standard deviation are, The degree of freedom is, df=n-1   =31-1   =30

Q: A car rental agency has the following kms (in thousands) for a simple random sample of 20 cars…

A: Given Information: Sample size (n) = 20 Confidence level = 90% = 0.90 Significance level…

Q: A company wants to estimate the mean time spent by clients waiting for their appointments in the…

A: Given data is…

Q: The following are two sets of data for the atomic mass of antimony the work of Willard and McAlpine…

A: (c )   State the hypotheses.   Determine the value of the test statistic.   Use EXCEL to obtain the…

Q: An automobile rental agency has the following mileages (in thousands) for a simple random sample of…

A: From the given information, an automobile rental agency has the following mileages for a simple…

Q: 1. Consider the data set below, which gives a sample of fifteen students randomly selected and asked…

A: Note: "Since you have posted a question with multiple sub -parts, we will solve first three sub…

Q: Problem in photo

A: Precision: The precision of the confidence interval is obtained by the width of the confidence…

Q: Construct a 95% confidence interval for p for a random sample of size n = 225 yielded $ = .46 A. .49…

A:

Q: If a sample proportion is 0.68, which of the following could be a 90% confidence interval for the…

A: The confidence interval formula of population proportion is (p̂ ± E), where p̂ is the sample…

Q: A recent survey of 50 workers for the starting monthly salary in PKR employed in the construction…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: The test scores of five randomly selected students at a community college, are given below. 85 96 72…

A: Sample mean for given values is 84.8, =AVERAGE(C23:C27). Here, the column C represents the data…

Q: For each level of confidence c below, determine the corresponding normal confidence interval. Assume…

A: The width of confidence interval increases as level of confidence increases. Consider the following…

Q: You are given the following data taken from a normally distributed population: 1.1   2.5   2.7…

A: Given data : 1.1 2.5 2.7 3.1 4.8 5.9 6.3 7.1 7.5

Q: Use the following information to find the 95% confidence interval to estimate normally distributed…

A: Given that variances of the two populations are equal Sample 1n1=60x1=21s1=5Sample 2n2=45x2=24s2=4

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.