tudies show that message therapy has a variety of health benefits a sample of 10 typical one-hour massage therapy sessions showed an average charge of $59 the population standard deviation for one-hour session is $5.50 a) what assumptions about the population should we be willing to make if a margin of error is desired b) using 95% confidence , what is the margin of error? c) Using 99% confidence, what is the margin of error?

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget…

A:

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped with a mean…

A: We have given that  Mean=mu=37 , standard deviation=sigma=5 X~Normal(mu=37,sigma=5)

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget…

A:

Q: Find the sample size need to find the Population Mean if the margin of error is $105, the confidence…

A: Solution: From the given information, confidence level is 0.95, σ=315 and E=105.

Q: Designing Aircraft Seats In the process of designing aircraft seats, it was found that men have hip…

A:

Q: For a set of data that are distributed in a bell or mound shape, approximately what percentage of…

A: In particular, the empirical rule predicts that 68% of observations falls within the first standard…

Q: Neck sizes again Look again at the histogram of men’sneck sizes in Exercise 24.a) Is the mean closer…

A: a. The frequency histogram with sample recruited health study of 250 men neck sizes (in inches).…

Q: A histogram is used to understand:

A: Histogram describes the frequency of the data using bars.

Q: If a set of data has a mean of 50 and a standard deviation of 4.5, what is the z-score for a value…

A: If a set of data has a mean of 50 and the standard deviation of 4.5. We have to find the z-score for…

Q: It uses the sample mean to determine a level of confidence for an effect Researchers have more…

A: It uses the sample mean to determine a level of confidence for an effect Researchers have more…

Q: Women stereotypically talk more than men do and researchers wondered how much more. Suppose a study…

A: The sample size for women nw is 42 , the sample mean  is 14297 , and the sample standard deviation…

Q: When computing a 95% CI for a population mean, the ____ is used to compute the margin of error.…

A: When computing a 95% CI for a population we use two-tailed t value at 0.05.

Q: A t-test is used to understand:   Multiple Choice   the probability of a statistical difference in…

A: A t-test is used to understand:

Q: Car speeds again For the car speed data of Exercise 18,recall that the mean speed recorded was 23.84…

A: a) Consider, The mean and standard deviation is as follows:

Q: ) 99.7% of the widget weights lie between ______ and_______ b) What percentage of the widget…

A:

Q: From previous studies, it has been generally believed that Northern Hemisphere icebergs have a mean…

A: From the given information, the Northern Hemisphere icebergs have a mean depth of 270 meters.

Q: An instructor record how long it takes students to finish a statistics test. If the times are skewed…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A group of students in a math class were surveyed and asked: “How many hours each week do you study…

A: Solution

Q: a variable of a population has a mean of 73 and a standard deviation of 36. a. Identify the sampling…

A: Population mean =73Standard deviation =36We have to finda..The distribution of sample mean if sample…

Q: The following sample data are from a normal population: 10, 9, 12, 14, 13, 11, 7, 4. a. What is the…

A: Given The data is as follows: 10, 9, 12, 14, 13, 11, 7, 4

Q: Use the Empirical Rule. Suggestion: sketch the distribution in order to answer these questions. a)…

A: mean =48 s=4

Q: e) Compare part a to part b: i. What happens to the mean when the dataset is shifted by 3? ii. What…

A: Normal data :  1,2,3,5,5   When data shifted by 3 :  Data will be :  4,5,6,8,8   When data…

Q: calories consumed by members of a track team the day before a race are normally distributed, with a…

A: Given that, The calories consumed by members of a track team the day before a race are normally…

Q: What does Chebyshev’s rule say about the percentage of observations in any data set that lie within…

A: a.We have to determine the percentage of observations in any data set that lie within six standard…

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget…

A: Let X is defined as the widget weights. The widget weights have a mean of 58 ounces and a standard…

Q: What percent of the observations in a distribution are LESS than the third quartile? O a. 25% O b.…

A: To find :  Distribution  are less than the third  quartile.

Q: What does​ Chebyshev's rule say about the percentage of observations in any data set that lie within…

A: The Chebeyshevv's inequality is stated as, for a random variable, X with finite mean, μ and…

Q: Consider the following sample data. Sample A: 13, 23, 33 Sample B: 71, 81, 91 Sample C: 1,050;…

A: Given data: Sample A: 13, 23, 33 Sample B: 71, 81, 91 Sample C: 1,050; 1,060; 1,070 To…

Q: Do people walk faster in the airport when they are departing​ (getting on a​ plane) or do they walk…

A: Given, α=0.05 μ1 = represent the mean speed of people departing and μ2 = represent the mean speed of…

Q: Please do not give solution in image format thanku Load "diabetes" datasets from SKlearn and do the…

A: 1import numpy as np 2import matplotlib.pyplot as plt 3from sklearn.datasets import load_diabetes…

Q: Snow 1) Find the mode, median and mean of the data set below. Then,se the computational And, formula…

A: 12,10,15,12,20 Let x={12,10,15,12,20} sample size(n)=5

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.