If the standard deviation of hole diameter exceeds 0.01 millimeters, there is an unacceptably high probability that the rivet will not fit. Suppose that in a sample of 15, the standard deviation is 0.008 millimeter. Is there strong evidence to indicate that the standard deviation of hole diameter exceeds 0.01 millimeter? Use α = 0.10.   What is the Statistical Decision in statement form?

Q: If the graph of the normal distribution has a mean of 2 and the standard deviation of 0.5, the are…

A: Yes, the area under the graph is equal to 1 for a normal distribution with a mean of 2 and a…

Q: Assume the random variable X is normally distributed with mean u = 50 and standard deviation o = 7.…

A: Let X be the random variable which follows normal distribution with mean 50 and standard deviation…

Q: A normal distribution has mean 69.6 and standard deviation 4.05. Find the data value corresponding…

A:

Q: The length of a movie file that is available for streaming is modeled using the normal distribution…

A: Let X be the random variable from normal distribution with mean (μ) = 190.3 and standard deviation…

Q: If the population standard deviation of a normal distribution is 2.8, then find the standard…

A: Answer: From the given data, Population standard deviation = 2.8 number of observations = 68

Q: The air in the crown should be an average of 100 celcius for a ballon to be in a state of…

A: From the provided information, Sample size (n) = 53 Sample mean (x̅) = 97 degrees Population…

Q: A random sample of 120 students has a test score average deviation of 11.4 find the margin of error…

A:

Q: systolic blood pressure (given in millimeters) of males has an approximately normal distribution…

A: Given: Population mean μ=125 Population standard deviation σ=14 Let X be normal distribution. X ~…

Q: Assume that adults have IQ scores that are normally distributed with μ=38 and a standard deviation…

A:

Q: ropolist wishes to estimate the average height of men for a certain race of people.If the population…

A: The sample size can be calculated as: n=z×σE2 Here, z = desired confidence level E = The allowable…

Q: A population has a mean μ=73 and a standard deviation σ=9. Find the mean and standard deviation of a…

A:

Q: The score on a standardized test for a certain year is modeled using the normal distribution shown…

A: From the given information, it is clear that,  V=Mean μ=76.5, Standard deviation σ=5.2 According to…

Q: Assume that z scores are normally distributed with a mean 0 and a standard deviation of 1. If Pl - b…

A: # z be the standard normal variates with mean 0 and standard deviations 1  To find value of b such…

Q: A simple random sample of six values had mean x = 13.00 and standard deviation s = 7.155. Calculate…

A: Given,

Q: Assume the random variable X is normally distributed with mean µ = 50 and standard deviation o= 7.…

A: Z is known as standard normal variable and it's value is obtained using standard Normal table

Q: Assume the random variable X is normally distributed with mean u = 50 and standard deviation o = 7.…

A: Given,μ=50σ=7Find 96th percentile?

Q: A distribution has Mean of µ = 100 and Standard Deviation of ? = 20. Use Chebyshev’s Theorem  to…

A:

Q: A simple random sample of 40 items resulted in a sample mean of 25. The population standard…

A: Givensample size(n)=40sample Mean(x)=25standard deviation(σ)=5

Q: A variable is normally distributed with mean 6 and standard deviation 2. Find the percentage of all…

A: It is given that the mean is 6 and standard deviation is 2.

Q: A normal distribution has a mean of µ = 24 with σ = 3. What is the minimum score needed to be in the…

A: given data  normal distribution μ = 24σ = 3 to be in top 14% minimum required score = ?

Q: I also need the standard deviation for the above question.

A:

Q: A population has a mean μ=79 and a standard deviation σ=18. Find the mean and standard deviation of…

A:

Q: The critical value for assessing the difference between two proportions at the 0.05 level, or .025…

A: Given: The critical value for assessing the difference between two proportions at the 0.05 level, or…

Q: Assume the random variable X is normally distributed with a mean of 50 and a standard deviation of…

A:

Q: a normal distribution has a mean of u=60 with o=8. for this population, which is the x value that…

A:

Q: A normal distribution has a mean of 20 and a standard deviation of 2. What is the z value of 17.5?

A:

Q: eve the claim is incorrect and find andom sample of 5 cars has a mean gas mileage of 24 mpg and a…

A: Assuming that population is normally distributed, let Xi be the random sample drawn from normal…

Q: A random variable is not normally distributed, but it is mound shaped. It has a mean of 18 and a…

A: given data population mean ( μ ) = 18population sd ( σ ) = 2sample size (n) = 13find mean of the…

Q: The lengths of individual fish in a pond have an approximate Normal distribution with a mean of…

A: Given data,μ=18.6 cmσ=6 cmIf n=36σx=?

Q: It is given that a vending machine dispenses a mean of 7.6 ounces with a standard deviation of 0.4…

A: Given: Mean = 7.6  Standard deviation =  0.4 oz

Q: The annual rainfall in a certain region is modeled using the normal distribution shown below. The…

A:

Q: A population has a mean μ=88 and a standard deviation σ=28. Find the mean and standard deviation of…

A: Given,   Mean = 88 Standard deviation = 28   The mean and standard deviation of a sampling…

Q: Assume the random variable X is normally distributed with mean μ=50 and standard deviation σ=7. Find…

A: Solution:From the given information, mean value is 50, standard deviation value is 7. Let the random…