Past data reveals that such gestation periods have a mean of 65 days with standard deviation 20days. The normal distribution for the population is shown by the dotted black line. The biologist plans to take a random sample of 15such wolves and will calculate the mean gestation period of the sample to compare to the known gestation periods. Compute the mean and standard deviation of the sampling distribution of sample means for a sample of size 15.

Q: The length of human pregnancies from conception to birth varies according to a distribution that is…

A: Given that  Mean =266 Population standard deviation =16 Sample size n=6

Q: 1) A company reports that the mean weight of yearling Angus steers is 1152 pounds with a standard…

A: We have given that  X~N(mu, sigma^2) mu=1152 ,sigma =84 Z-score =(x-mu )/sigma    Note :-According…

Q: The number of ants in a group is normally distributed with a mean of 67.0 and a standard deviation…

A: Let X be the random variable for the number of ants in a group. Given that, X~N(μ=67.0, σ=83.64)…

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: What percentage of students from this school earn scores that satisfy the admission requirement?…

A: It is given thatMean, μ = 1490Standard deviation, σ = 296Z-Score, Z = ( X - μ )/σwhere, Z be the…

Q: The adult eastern hellbender (a type of giant salamander) has a length which is normally distributed…

A: GivenFor eastern HellbenderMean(μ)=30.3standard deviation(σ)=3For Ozark…

Q: CetaceaNow is a conservationist organization that monitors the health of whale and dolphin…

A:

Q: The lifespans of certain 350 sample cricket insects are normally distributed. it is found that 15%…

A: Let, X be the life span. μ =mean σ= sd

Q: The U.S. Center for Disease Control reports that in year 1900, the mean life expectancy is 47.6…

A: 1.) Preliminary Condition Check: a.) One condition that must be satisfied for the independent t-test…

Q: Assume the samples are random and independent and the populations are normally distributed. A marine…

A: Given problem is :   Assume the samples are random and independent and the populations are…

Q: Among health care workers at a local hospital, the average number of vacation days taken per year is…

A: The mean is 5 and the standard deviation is 2.5.

Q: A population has a mean of u = 30. If 3 points are added to each score, what is the mean for the new…

A: Given :  Mean(μ)=30 and N=3

Q: with a standard deviation of $18. Estimate the mean amount people spent on their child's last…

A: Given that, Sample size (n) = 24 Sample mean (x¯) = $45 Sample std. dev. (s) = $18 Confidence level…

Q: The lengths of individual fish in a pond have a non-Normal distribution with a mean of 18.6 cm and a…

A:

Q: The standard deviation of a sampling distribution is smaller than the standard deviation of the…

A: The comparison of sd of sample to the sd of the population is as follows:

Q: n a randomly selected sample of women ages 20-34, the mean total cholesterol level is 188 milligrams…

A:

Q: Complete parts a and b below. Assume that a similar boat is loaded with 60 passengers, and assume…

A: Given that , 60 passengers are loaded i.e. n=60,  and  mean weight and standard deviation between…

Q: A fruit-canning company produces 250ml pineapple juice cans at its bottling plant. The population…

A: Given that, The population standard deviation for volume of pineapple juice filled in the cans is,…

Q: 2. Ho: μ = 55 H₂: μ # 55 The sample mean is 60, the sample standard deviation is 5.4, and the sample…

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

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

A:

Q: Assume the annual day care cost per child is normally distributed with a mean of ​$9000 and a…

A:

Q: The blue, red, and yellow curves all have a mean of 0, while the green curve has a mean of -2. pra…

A:

Q: tal of 82 Grade 11 students of ABC senior high school took the 60 item test in General mathematics.…

A: To find the normal distribution with the mean 42 and standard deviation 6

Q: Suppose the durations of human pregnancies follow a mound-shaped distribution with a mean of 266…

A:

Q: The U.S. Department of Transportation provides the number of miles that residents of the 75 largest…

A: There are two independent populations. Those which are named as Buffalo residents and Boston…

Q: Suppose that men's mean heartrate is 78.3 beats per minute (bpm), and women's mean heartrate is 73.9…

A: Given:men's mean heartrate =78.3women's mean heartrate=73.9standard deviation for both =4.7  and…

Q: Draw the normal curve. Suppose that the amount of time it takes the Bureau of Internal Revenue…

A: Solution-: Given: μ=14,σ=1.5 We want to find x such that, P[X<x]=0.45

Q: The shape of the distribution of the time required to get an oil change at a 20-minute oil-change…

A:

Q: At Pacific Freight Lines, bonuses are given to billing clerks when they complete 300 or more freight…

A: Given information Mean µ = 270 Standard deviation σ = 16 proportion of the time should a randomly…

Q: construct the normal model for data with a mean of 57 and a standard deviation of 6. Show the…

A: It is called empirical rule.  Given, Mu= 57 Sigma = 6

Q: The published proportion of traffic fatalities attributed to motorcycle accidents is 0.14. A…

A:

Q: The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one…

A: In this intriguing analysis centered around traffic speeds near Johnson City High School, the…

Q: A boat capsized and sank in a lake. Based on assumption of mean weight of 131 lb, the boat was rated…

A: Let "M" be the mean weight of passengers.

Q: The weight of male athletes is normally distributed with a mean of 95 kg and a standard deviation of…

A:

Q: (a) Identify the claim and state Hg and H, What is the claim? O A. The wind speed in Region A is…

A: Given:  The mean wind speed in region A,x¯1=13.7Population sd for region A, σ1=2.8The mean wind…

Q: Assume the average amount of caffeine consumed daily by adults is normally distributed with a mean…

A: The detailed solution is as follows below:

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: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: Given,X1=42, σ1=4.7, n1=35X2=45, σ2=4.4 , n2=35and level of significance α=0.10