A null hypothesis for a goodness-of-fit test and a frequency table from a sample are given.  H0:  pa = pb = pc = pd = 0.25 Ha: Some pi ≠ 0.25 A B C D Total 138 155 127 140 560 (a) Find the expected count for the category labeled B.     The expected count is ___________ b) Find the contribution to the sum of the chi-square statistic for the category labeled B. Round your answer to three decimal places. The contribution for the category labeled B is ____________ c)Find the degrees of freedom for the chi-square distribution for this table. Degree(s) of freedom_

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Q: Identify the symbols used for each of the following: (a) sample standard deviation; (b) population…

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Q: The body temperatures of two species of geckos were measured. The ng 14 geckos from species A had a…

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Q: A population has a bell-shaped distribution with a mean of 90 and a standard deviation of 8. Which…

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Q: Instruction: Dr. Jason wants to determine the spread of the scores of his two classes in their final…

A: Given that: Class A x f 90-98 3 81-89 7 72-80 7 63-71 11 54-62…

Q: In comparing variance and standard deviation which of the following statements is true? O a. Both…

A: A. Both variance and standard deviation amplify data values

Q: C. Given population 15, 12, 6, 9, and 17. Suppose samples of size 3 and 4 are drawn from this…

A: n μ σ σ2 μx¯ σx¯ σ2x¯ Sample Size Population Mean Population Standard Deviation Population…

Q: Calculate the sample standard deviation for this data set: 65, 48, 70. The formula for the sample…

A:

Q: The statistical hypothesis for a test on a mean is given below, along with the reduced difference…

A: From the above data The descriptive threshold is 0.0708

Q: Given below are the BMI statistics for random samples of males and females. 0.05. Test the claim…

A: From the provided information, n1=40x1=28.44075s1=7.394076n2=40x2=26.6005s2=5.359442α=0.05

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: We have the computations as, Tax rate xi Frequency (fi) fixi fixi^2 0.00-0.49…

Q: Unfortunately, arsenic occurs naturally in some ground watert. A mean arsenic level of u8.0 parts…

A: a)   Denote μ as the average arsenic level.

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A: The number of observations is n = 8.

Q: Q1: A population consists of values 3.5, 6.5, 9.5, 12.5, 15.5 and 18.5. (i) Find the mean µ and…

A: Given: Population size N= 6  The population mean is obtained as follows:…

Q: The dean of a university estimates that the mean number of classroom hours per week for full-time…

A: Class room hours(x)11.57.911.37.86.811.912.79.1

Q: The weights of beagles (dogs) have approximately a normal distribution with u = 17.1 pounds and a…

A: X: the weights of beagles (dogs)population mean : μ = 17.1 poundspopulation standard deviation : σ =…

Q: Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of…

A: The given hypothesis is H0:μd=0 versus H1:μd≠0.

Q: Part 2 of 4 (b) Compute the P-value. Round the answer to at least four decimal places. P-value =

A: The difference is, After 3 days After 6 days Difference 1326 1316 10 1366 1351 15 1372 1367…

Q: (1)In 2015, the average duration of long-distance telephone calls from a certain town was 3.9…

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Q: population has a mean u =163 and a standard deviation o = 28. Find the mean and standard deviation…

A: μx¯ = μ

Q: You receive a brochure from a large university. The brochure indicates fewer than 33 students. You…

A: Given information:

Q: Find the standard deviation for the given data n- 48, Σίx, = 1620 , Σix? = 6640ο , ΣΧ-180 %3D O a.…

A: Given that, n = 48∑fixi=1620∑fixi2=66400∑xi=180

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Q: Consider this data set of (n 117) birth weights in grams that has been sorted. %3D 1545 1607 1870…

A: 16 percentile: Pi=in+1100th term

Q: 8. Calculate SS, o², and o for the following population of N = 5 scores: 6, 0, 4, 2, 3.

A: N=5Population =6,0,4,2,3

Q: The type of household for the U.S. population and for a random sample of 411 households from a…

A: Given observation and calculation is shown below

Q: The following is a set of data for a population with N = 10. 10 7 15 11 7 5 6 6 5 6 a. Compute the…

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Q: Got Flu Shot Did not get Flu Shot Category Got Flu Shot Did not get Flu Shot The expected…

A: CategoryGot the FluDid not get the FluGot Flu Shot5475Did not get Flu Shot1014

Q: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

A: Obtain the 7th percentile of the distribution.   The 7thpercentile of the distribution is obtained…

Q: Listed below are the jersey numbers of 11 players randomly selected from the roster of a…

A: Given data is  58,12,65,39,48,67,21,20,1,52,51  Let us write in sorted form  1, 12, 20, 21, 39, 48,…

Q: Use the table below in answering item numbers 9 - 10. H P(H) 2 3/10 2/5 4 1/5 1/10 9. Find the mean…

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Q: In 2015, the average duration of long-distance telephone calls from a certain town was 3.9 minutes.…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: Consider the following frequency table. Value Frequency 1.50 1 2.00 8 2.50 7 3.00 4 Calculate the…

A: The standard deviation is 0.42 when rounded to 2 decimal places.Explanation:To calculate the…

Q: For data with a bell shaped about of the data lie within three standard deviation of the mean 68%…

A:

Q: Find the interquartile Range (Q) for both years. Does Q change in the same way as the standard…

A: As number of observations is 20 (even) Q1 = n+14th in ascending order Q3 = 3n+14th in ascending…

Q: You survey 5 of your friends regarding their score on a test. The results are as follows: 80 50 95…

A: Solution: Let X be the test score. The given data is 80, 50, 95, 90 and 70.

Q: A survey found that women's heights are normally distributed with mean 63.1 in. and standard…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: A survey was taken in a college class asking how many people lived in each student's household, with…

A: From the given information, x f xf fx^2 1 3 3 3 2 6 12 24 3 16 48 144 4 4 16 64…

Q: days after pouring. The data are as follows. Can you conclude that the mean strength after three…

A: Given the data       Block       1 2 3 4 5 After 3 days 1341 1316 1352 1355 1327 After 6…

Q: For a sample with a standard deviation of s = 12, a score of X = 42 corresponds to z = –0.50. The…

A: given data  s = 12 x = 42 z = -0.50 sample mean (M) = ?

Q: quiz to see if their mean pulse  rate changed. A summary of the result is given below: Student…

A: We have given that  Sample size n =8 Degree of freedom = n - 1 Level of significance =alpha =0.05

Q: Given the following data set for the amounts of sugar in a sample of 8 cereals (measured in grams):…

A: See the hand writing solution

Q: Hampshire for the first 15 days of February 2021. Use the given data to answer questions 1 - 8.…

A: We have given that data  I want to find Q1 and Q3 Formula for Range  Range = max - min Note:-…

Q: In a sample of n = 56 observations The sum of x is ∑x = 4135 The sum of x² is ∑x² =…

A: List of formulae : Sample mean : x¯ =∑xn Sample standard deviation : s=∑x2-∑x2nn-1

Q: A survey of the opinions of property owners about a street widening project was taken to determine…

A: The following information has been provided: Observed Frequencies:   Opinion…