he ages of a group of 149 randomly selected adult females have a standard deviation of 16.5 years. Assume that the ages of female statistics students have less variation than ages of females in the general​ population, so let σ=16.5 years for the sample size calculation. How many female statistics student ages must be obtained in order to estimate the mean age of all female statistics​students? Assume that we want 90​% confidence that the sample mean is within​ one-half year of the population mean. Does it seem reasonable to assume that the ages of female statistics students have less variation than ages of females in the general​ population?

Q: The ages of a group of 133 randomly selected adult females have a standard deviation of 18.6 years.…

A:

Q: The ages of a group of 141 randomly selected adult females have a standard deviation of 16.3 years.…

A:

Q: The ages of a group of 142 randomly selected adult females have a standard deviation of 17.1 years.…

A: Population standard deviation()=17.1

Q: The ages of a group of 155 randomly selected adult females have a standard deviation of 16.6 years.…

A:

Q: The ages of a group of 148 randomly selected adult females have a standard deviation of 17.1…

A: Given: n = 148 σ=17.1 E=0.5

Q: The ages of a group of 146 randomly selected adult females have a standard deviation of 18.2 years.…

A:

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

A:

Q: The ages of a group of 138 randomly selected adult females have a standard deviation of 18.1 years.…

A:

Q: The ages of a group of 135 randomly selected adult females have a standard deviation of 16.2 years.…

A: We have given that  Standard deviation =sigma =16.2 Margin of error =E= 1.5 99% confidence.

Q: The ages of a group of 126 randomly selected adult females have a standard deviation of 17.4 years.…

A: From the provided information, Population standard deviation (σ) = 17.4 years Margin of error (E) =…

Q: The ages of a group of 134 randomly selected adult females have a standard deviation of 17.2 years.…

A:

Q: The ages of a group of 150 randomly selected adult females have a standard deviation of 17.4 years.…

A:

Q: The ages of a group of 150 randomly selected adult females have a standard deviation of 17.8 years.…

A: From the provided information, Standard deviation (σ) = 17.8 years Confidence level = 98% Margin of…

Q: The ages of a group of 120 randomly selected adult females have a standard deviation of 16.7 years.…

A:

Q: ehe ages obtained in order to estimate the mean age of all female statistics students? Assume that…

A: Given Population standard deviation=18.6 Margin of error=0.5

Q: The ages of a group of 148 randomly selected adult females have a standard deviation of 16.4 years.…

A: The question is about sample size estimationGiven :Population standard deviation of ages of adult…

Q: The ages of a group of  153 randomly selected adult females have a standard deviation of  16.3…

A: The population standard deviation is 16.3, and confidence level is 90%.

Q: Sally spent a lot of time during COVID-19 recording the age of every professional wrestler. The data…

A: We have to identify sampling distribution.

Q: The ages of a group of 120 randomly selected adult females have a standard deviation of 18.1 years.…

A: In statistics, standard deviation is defined as a measure of variability, that indicates how distant…

Q: Suppose that we randomly select a sample of 80 measurements from an infinite population having a…

A: 1) Given: Mean μ=30 Standard deviation σ=5 Sample size n=80

Q: The ages of a group of 130 randomly selected adult females have a standard deviation of 18.6 years.…

A: Standard Deviation = σ = 18.6 Margin of Error = E = 0.5

Q: The ages of a group of 137 randomly selected adult females have a standard deviation of 17.2 years.…

A: Given , E = 0.5 ,  σ=17.2 (1-α)100% = 98% α=0.02

Q: The ages of 128 randomly selected adult females have a standard deviation of 17.2 years. Assume that…

A: Given data:sample size = 128 Population standard deviation = 17.2 Confidence level = 98%

Q: The required sample size is (Round up to the nearest whole number as needed.) Does it seem…

A: It is given asMargin of error, E = 1.5Population standard deviation, σ = 16.8Confidence level = 98%

Q: How many retired people should be sampled if we want to calculate with 92% confidence the true mean…

A: The provided information are: Confidence level = 92% Margin of error (E) = 0.8 Population standard…

Q: The ages of a group of 133 randomly selected adult females have a standard deviation of 18.4 years.…

A:

Q: The ages of a group of 153 randomly selected adult females have a standard deviation of 18.9 years.…

A:

Q: If the population standard deviation is 6.8, then Find the standard deviation of x for an SRS of 64…

A: Answer: From the given data, Population standard deviation σ = 6.8 Sample size (n) = 64

Q: If the number of degrees of freedom for a chi-square distribution is 28, what is the population mean…

A: It is known that for chi-square distribution: μχ2=degree of freedom   So,μχ2=28

Q: The ages of a group of 125 randomly selected adult females have a standard deviation of 16.4 years.…

A: Given Information: Standard deviation (S) = 16.4 years Error (e) = 0.5  Confidence level = 99%  The…

Q: The ages of a group of 159 randomly selected adult females have a standard deviation of 17.8 years.…

A: Given that σ =17.8 , M.E =0.5 ,alpha= 0.01 n = ?

Q: Suppose that among the population of smartphone owners with 16GB of storage, the mean amount of…

A: From the provided information, Mean (µ) = 13 GB Standard deviation (σ) = 3 GB

Q: variation than ages of females in the general population, so let o = 18.9 years for the sample size…

A:

Q: The ages of a group of 155 randomly selected adult females have a standard deviation of 16.4 years.…

A: Determine the value of sample size n. The value of sample size n is obtained as shown below: Use…

Q: The ages of a group of 123 randomly selected adult females have a standard deviation of 16.9 years.…

A: Given, 123 randomly selected adult females have a standard deviation of 16.9 years. Confidence level…

Q: For men heights are normally distributed with a mean of 69 inches and a standard deviation of 2.8…

A: The random variable X is heights of the men. It is normally distributed. X~N(μ=69,σ=2.8) The sample…

Q: The ages of a group of 137 randomly selected adult fermales have a standard deviation of 16.5 years.…

A:

Q: The ages of a group of 148 randomly selected adult females have a standard deviation of 17.1 years.…

A: Given information- Population standard deviation, σ = 17.1 years Confidence interval = 0.98…

Q: The ages of a group of 138 randomly selected adult females have a standard deviation of 16.1 years.…

A: We have given that  Sigma =16.1  Margin of error =E=1.5

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: The ages of a group years. Assume thal ages domly selected aduit females have a standard devlation…

A:

Q: Suppose a random sample of 4949 measurements is selected from a population with mean 6060 and…

A: We have given thatMean() = 60standard deviation () = 10sample size (n) = 49

Q: The ages of a group of 139 randomly selected adult females have a standard deviation of 17.2 years.…

A:

Q: he required sample size is. Round up to the nearest whole number as needed.)

A: It is given that confidence level is 0.98, population standard deviation is 17.8 and the margin of…