A rivet is to be inserted into a hole. A random sample of n = 15 parts is selected and the hole diameter is measured. The sample standard deviation is $ = 0.005 millimeters. Is there strong evidence to indicate that the standard deviation of hole diameter exceeds 0.01 millimeters? Use a = 0.01. (a) Calculate the test statisticxy . Round your answer to two decimal places (e.g. 98.76).

Q: A decision-maker wishes to test the null and alternative hypotheses shown to the right using an…

A: Critical value: In testing of hypothesis, the critical value is a point on the distribution test…

Q: The average thickness of books on a library shelf is 8.3 centimeters. The standered deviation is .6…

A: The mean is 8.3 centimeters and standard deviation is 0.6 centimeters. The books are undersized…

Q: ssume that the Richter scale magnitudes of earthquakes are normally distributed with a mean of 1.157…

A: Given that μ=1.157 & σ=0.532

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: normal distribution μ = 100σ = 15 P(108<x<132) = ?

Q: 3 Calculate the Standand deviationA 25 vand to hundredths. 16/719

A: Concept : The standard deviation of a data is σ = 1N∑i=1i=Nxi-μ2    where xi is given data and N is…

Q: Use the body temperatures, in degrees Fahrenheit, listed in the accompanying table. The range of the…

A:

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: given data, normal distribution , μ=100σ=15we have to find out the shaded region for the given…

Q: The average temperature in Anchorage, Alaska, in January is 21'F with a standard deviation of 10°.…

A: For Anchorage, μ=21σ=10 Consider, the probability that the temperature in a January with a high of…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 266.9…

A: Given: μ=266.9σ=15.4α=1-0.68=0.32

Q: The ages (in years) of a random sample of shoppers at a gaming store are shown. Determine the range,…

A: Given data:- 12,17,23,14,13,18,21,16,14,19Range=maximum-minimum=23-12=11Mean =…

Q: The area of the shaded region is

A: Consider X denotes the IQ score. X~Nμ=100,σ=15

Q: Suppose the data have a bell-shaped distribution with a mean of 40 and a standard deviation of 7.…

A:

Q: The mean square footage is x = 2,415 (Round to the nearest integer as needed.) The standard…

A:

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 15 X~N (100, 15)

Q: In which month is it more unusual to have a day with a high temperature of 57°​? Explain

A: For January, mean = 36 and SD = 9 Fir July, mean = 77 and SD = 8 First we calucuate the z scores of…

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A: Step 1: Sketch the regionSince we are making a graph for a bone density test score between -2.05 and…

Q: The critical value from the distribution for a confidence interval of 99.8% is: t*= DNE x Use…

A: The data shows the Permafresh and Hylite.

Q: Determine a z-score to the nearest 0.01 for each of the test scores. Which is the better score? Rour…

A: Given data,For TEST A:Mean=670sd=80Test score=950For TEST B:Mean=2.7sd=0.4Test score=4.6

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A:

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A:

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: The graph on the IQ scores of the adults shows a Normal distribution.The mean is 100, and the…

Q: The diameters of bolts produced in a machine shop are normally distributed with a mean of 5.7…

A: GivenMean(μ)=5.7standard deviation(σ)=0.08

Q: Below is a stem-plot of the birth weights of male babies born to the smoking group. The stems are in…

A: Obtain the median birth weight.   The median birth weight is obtained below as follows:   The…

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A: We have given that the average 57.33 miles per hour and standard deviation 4.29 miles per hour.…

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A: Given that the value of y is split into two halves. y=1.09±0.02×10-8-3.6±0.2×10-9 One needs to find…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A:

Q: Please circle your answers. Thank you in advanced!

A: Part a: The variable under study is the increment in weight (pounds), so the level of measurement…

Q: I need help with #20

A: