Suppose an economist wishes to estimate the mean commute time, , of all people in the civilian labor force. Determine the sample size needed in order to be 95% confident that is within 5 years of the point estimate, x. Assume the population standard deviation , is 15.1 years.

Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of…

A:

Q: Suppose that the antenna lengths of woodlice are approximately normally distributed with a mean of…

A:

Q: Suppose a small paint manufacturing company has a daily production that is normally distributed with…

A: Solution: It is given that a small paint manufacturing company has a daily production that is…

Q: the manager of a radio station wants to estimate the mean age of listeners to a specific program…

A: Given information- Confidence interval = 0.98 Significance level (α) = 1- 0.98 = 0.02 Population…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given Data: Let X represent the random variable Mean=9 Standard deviation=1.1 X~ Normal (9, 1.12)…

Q: The ages of a group of 158 randomly selected adult females have a standard deviation of 16.5 years.…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given data,Mean μ=11sd      σ=1.2P(X<x)=20%x=?

Q: A research company wants to estimate the mean IQ score for the population of all high school…

A:

Q: Suppose that the minimum and maximum ages for typical textbooks currently used in college courses…

A: Using the range rule of thumb, Standard deviation = range/4                                   =…

Q: Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 90…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given :  μ = 10 σ = 1.1

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: given data normal distribution μ = 12σ = 1.2

Q: Assume that the amount of time a person experiences cold virus symptoms are normally distributed…

A: Given data Mean = 7.5 days  Standard deviation  = 1.5d days To find: What proportion of cold…

Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of…

A: From the provided information, Mean (µ) = 100 minutes Standard deviation (σ) = 20 minutes Let X be a…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given data,Mean μ=9 million dollarssd     σ=1.1 million dollarsP(X<x)=15%x=?

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: mean=8 standard deviation=1.1

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A:

Q: A manufacturer of calculator batteries claims that the mean length of life for its battery is 500…

A: The empirical graph is, The random variable X is defined as the length of life for its battery. The…

Q: 13. Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A:

Q: Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 90…

A: Given Mean=90 Standard deviations=10

Q: For a random sample of 90 overweight men, the mean number of pounds that they were overweight was…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given Information: Suppose that the quarterly sales levels among health care information systems…

Q: Suppose the mean blood glucose of a population of adults is 162 with a standard deviation of 58.…

A:

Q: Suppose your manager indicates that for a normally distributed data set you are analyzing, your…

A: we have to find percentage of data fall within 0.8 sd of mean (between z = -0.8 and z = 0.8)

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Solution

Q: Assume that adults have IQ scores that are normally distributed with a mean of 107 and a standard…

A:

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: Given information- Population mean µ = 8 million Standard deviation σ = 1.1 million Z = -1.2816…

Q: An analyst needs to estimate the mean length of time it takes workers from a department to come back…

A: It is given that the confidence level is 0.90, the population standard deviation is 14 minutes and…

Q: Suppose that the quarterly sales levels among health care information systems companies are…

A: The objective of this question is to find the sales level that separates the bottom 15% of all…

Q: (a) between 56 and 74. % (b) above 68. % (c) below 56. %

A: here as per guideline i have calculated 3 subparts , plz repost for remainning. Suppose that the…

Q: Assume that the number of days from conception to birth is normally distributed with a mean of 271…

A: Given that  Mean = 271, SD = 4 X = 238

Q: Suppose that the amount of time per day that American adults spend on their mobile devices is…

A: The following information has been given: The population mean is μ=229. The population standard…

Q: Male and female populations of to under 80 years old are represented by age in the table below.…

A: The question is about frequency distribution.Given :

Q: An advertising agency that serves a job radio station wants to estimate the mean amount of time that…

A: Here, σ=45, confidence level=90%, E=5.

Q: Suppose that the lengths of pregnancies are normally distributed with a mean of 271 days and a…

A:

Q: Suppose that the quarterly sales levels among health care information systems coffi dollars and a…

A: Answer  Mean =12 standard deviation =1.3

Q: Assume that weights of adult females are normally distributed with a mean of 79 kg and a standard…

A: Mean(μ)=79standard deviation(σ)=22

Q: Suppose that a recent article stated the mean time spent in jail by a first-time convicted burglar…

A: Given :μ=2.7x¯=3.01s=1.78n=27α=0.1The hypotheses for the relevant test is :H0:μ=2.7  H0:μ>2.7…

Q: What does the standard deviation measure?

A:

Q: Assume that a normal distribution of data has a mean of 24 and a standard deviation of 5.Use the…

A: Population mean μ =24 Population standard deviation =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.