According to an article in Good Housekeeping, a 128-lb woman who walks for 30 minutes four times a week at a steady, four-mi/hr pace can lose up to 10 lbs over a span of a year.  Suppose 35 women with weights between 125 and 130lb perform the four walks per week for a year and at the end of the year the average weight loss for the 35 was 9.1 lbs.  If the sample standard deviation is 5, calculate the value of the test statistic and find the p-value of the hypothesis test of Ho:µ =10 vs H1:µ≠10.

Q: Humerus bones from the same species of animal have approximately the same length-to-width ratios. It…

A: Solution: Given information: n= 100 Sample size  x= 5.6 Sample mean s= 0.25 Sample standard…

Q: If a population has a standard deviation σ of 36 units, what is the standard error of the mean if…

A: The population standard deviation is 36.

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 proportion of 10-year old boys is less than 140 cm in height?

A: mean  = 138  standard deviation  = 7  X=  heights of 10-year old boy

Q: Suppose that weights of 3200 registered female great Danes in the United States are distributed…

A: Using normalised probability and z table

Q: At one college, GPA's are normally distributed with a mean of 2.6 and a standard deviation of 0,4.…

A: At one college, GPA's are normally distributed with a mean of 2.6 and a standard deviation of 0.4

Q: 1. The life spans of a particular species of turtle are normally distributed with a mean of 180…

A: Given that mean =180 ,s.d =40 P ( 100 <X < 260) = ?

Q: The lengths of pregnancies are normally distributed with a mean of 280 days and a standard deviation…

A:

Q: population has a standard deviation of 18 on average how much difference should exist between the…

A: A population has a standard deviation of 18.

Q: Suppose that striped dolphin lengths are normally distributed with a population standard deviation…

A: The formula for the minimum sample size is as follows: Here, zα/2 is the critical value at 95%…

Q: umerus bones from the same species of animal have approximately the same length-to-width ratios. It…

A:

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: Based on data from the National Health Survey, women between the ages of 18 and 24 have an average…

A: From the given information, the mean is 114.8 and the standard deviation is 13.1.

Q: The weight of oranges growing in an orchard is normally distributed with a mean weight of 8 oz. and…

A: From the given information        Mean , μ=8 Standar deviation σ=1.5 We have to find how many orange…

Q: If an espresso machine out-pour is normally distributed with the mean of 0.9 ounces and standard…

A: Let  X be the random variable from normal distribution with mean (μ) = 0.9 and standard deviation…

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: In a sample of 134 ball bearings, the average diameter was found to be 3.78mm with a standard…

A: The sample size of ball bearings, The mean diameter,  mmThe standard deviation, A point estimate for…

Q: For a population with a standard deviation of 20, what is the zscore corresponding to a score that…

A: The population standard deviation is 20. The z-score corresponding to a score that is 5 points below…

Q: The daily sleep duration among college students is normally distributed with a mean of 7.13 hours…

A: Solution

Q: The average weight loss at a clinic is 10lbs with a standard deviation of 5lbs. What is the chance…

A:

Q: The mean gas mileage for cars driven by the students at Chillville High School is 28.0 miles per…

A:

Q: fitness center is interested in finding a 95% CI for the mean number of days per week that Americans…

A: Given: Xˉ=3.2 s=2.6 n=248  Confidence level = 95% As the population standard deviation is not known,…

Q: a life time of a certain brand of tires is approximately normally distributed with a mean of 42,500…

A: Given information- Population mean, µ = 42,500 miles Population standard deviation, σ = 3200 miles…

Q: All the houses in Stanton county have a mean size of 1650 square feet with a standard deviation of…

A:

Q: If a sample of 144 male weights has a mean of 266 pounds and standard deviation of 32 pounds. The CV…

A: Given data Mean (x̅ ) = 266Standard deviation (s) = 32Coefficient of variation(CV) for sample is…

Q: The ages of people living in a retirement community are normally distributed with a mean age of 68…

A:

Q: the mean of a random sample of size n= 25 is used to estimate the mean of an entire population that…

A:

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: A certain grade egg must weigh at least 2.0 Oz. If the weights of eggs are normally distributed with…

A: Given data The weights of eggs are normally distributed with mean of 1.5 0z and standard deviation…

Q: When samples of size 30 are collected from a normal population that has a mean of 200 and a standard…

A:

Q: Suppose the total weight of passengers on a particular flight has a mean of 1499 with standard…

A: Let X be the random variable from normal distribution with mean (μ) = 1499, standard deviation (σ) =…