In a sample with M = 40 and s = 8, what is the z-score corresponding to X = 38? %3D

Q: Suppose X-N(10,sigma=2), what is the z-score of x = 7.

A: Given Information: X-N(10,sigma=2). X follows Normal distribution with mean μ=10 and standard…

Q: A sample of n=5 scores produces SS=20. The variance for this sample is 3--'

A: We Know that  Sample Variance Correction It is often perplexing why the divisor of the population…

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Q: A study of college students in the city of Pemblington found that  8% had been victims of violent…

A: The parameter tell us about the the population where as statistics tell us about the sample. The…

Q: Suppose random variable X follows a normal distribution with mean 10. If 16% of observations from…

A:

Q: d. FIND t a n = 10 for the 90% confidence interval for the mean. %3D

A: d. Given: n=10 α=0.1 The degrees of freedom is obtained as below: df=n-1=10-1=9 Critical value: The…

Q: A sample from a normal population with µ = 50 and  σ = 6 has a mean of M = 48.20. If the sample mean…

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Q: According to the American Pet Products Manufacturers Association, cat owners spend an average of…

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Q: You have given an entrance exam to 320 applicants to a university program. You only have the…

A: Applicants who scored above 50th percentile is accepted. Since 50th percentile = Median  Hence here…

Q: A sample with a mean of M = 40 and a variance of s2 = 12 has an estimated standard error of 2…

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Q: An experiment compares two treatment conditions with a sample ofn = 20 in each treatment. If the…

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Q: What proportions of males and females wear a facemask while in a large parking lot? There is some…

A: p^m=Xmn

Q: For a population with u= 40 and a =8, what is the z-score corresponding to X-34?

A: Z-score is -0.75

Q: The College Boards, which are administered each year to many thousands ofhigh school students, are…

A: Hey, since there is multiple subpart questions posted, we will answer first three subparts. If you…

Q: Suppose that when data from an experiment was analyzed, the p-value for testing Ho : µ = 301 vs. H1…

A: As per our guidelines we are suppose to answer first question.…

Q: One sample of n=12 scores has a mean of M=7, a second sample of n=8 scores has a M =12. If the 2…

A: The mean M of the combined sample is,

Q: The average weight of a Coastal male Grizzly Bear is approximately normal with E(x); =795 pounds and…

A:

Q: A sample of n = 49 scores with M = 43 is selected from a population with µ = 40 with σ = 21. What is…

A: Mean = 40 Standard deviation = 21 Sample size = 49 Sample mean = 43

Q: A study assessed the lung destructive index among smokers and non-smokers provided the following…

A: Given , x¯1 = 14.5 , x¯2 =12.5 n1 = 10, n2 = 8 Pooled standard deviation = sp = 1.50 Claim : The…

Q: A repeated-measures study with n = 26 participants produces a mean difference of MD = 3 points, SS =…

A: Given information n = 26 MD = 3 SS = 500 t = 3.50 df = n – 1 =25

Q: 1. Using an evenly distributed data population of 8,000 samples, how many Would fall between a…

A: From the provided information, Population size (N) = 8,000 The percentage of population data fall…

Q: In the one-sample t-test, the SE is the: a)size of the effect b)none of the options c)SD between u…

A: Standard error: Standard error is a measure which explains how accurate are the sample means to…

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

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Q: For a population with μ = 80 and σ = 6,what is the z-score corresponding to X = 68?

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Q: A random sample of n - 4 scores is obtained from a normal population with u = 30 and o- 8. What…

A: Let us assume that the  The population is denoted by X which is normally distributed. So, by the…

Q: (5) At the a = 0.05 level, test the claim that the proportion of defects for hair dryers is 0.3. If…

A: Given: n=200 and x=57. Then,p^=xn=57200=0.285

Q: In a population with o = 8, a score of X = 44 corresponds to a z-score of z= -0.50. What is the…

A: Here, standard deviation is 8, X = 44, and z = –0.50.

Q: If a random sample of size n=160 has x¯=105 and s=9.5, find the standard error of the statistic.…

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Q: In a sample of n 15, a researcher finds a correlation of r =0.74 between IQ score and average grade.…

A: Given: n=15 r=0.74   We know that, rn-21-r2~ tn-2

Q: If a researcher reports a t-statistic with df = 18, how many individual subjects participated in the…

A: Given: Df = 18

Q: A sample of n = 64 scores is selected from a population with µ = 60 and σ = 10. If the sample mean…

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Q: An independent-measures study comparing two treatment conditions produces a t statistic with df -18.…

A: DF = n1+n2-2 =18 Here n1=n2 = n

Q: If a t-test dependent samples produced t(18) - 3.32, p < .01, 2-tails test, how many participants…

A: The type of test is two tailed test The value of t-test statistic for depend samples is, t = 3.32…

Q: If there are 4 scores per group and the t value is 2.34, what is the p value for a two-tailed test…

A: Note: Thank you for the question. Since it is given that, there are 4 scores per group we are…

Q: Two samples, each with n = 9 scores, produce an independent-measures t statistic of t = 2.00. If the…

A: Given information Two samples each with n = 9 scores D.O.F = 9 + 9 – 2 = 16 t = 2

Q: A sample of n = 16 scores is selected from a population with μ = 100 and σ = 32. If the sample mean…

A: From the provided information,

Q: To display the effects of the X variable on the Y variable in a bivariate table when the independent…

A: According to the provided information, the independent variable has been arranged in the columns.

Q: Assume that anxiety scores as measured by an anxiety assessment inventory are normally distributed…

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Q: The model below was fitted to a random sample of 30 families in order to explain household…

A: Obtain the value of the test statistic.   The value of the test statistic is obtained below as…

Q: Suppose X is a normal population with the mean D and standard deviation O = 15. A sa of size 25…

A: b. Given that the population standard deviation is 15. Sample size is 25 Sample mean is 81.…

Q: What is the P(t>1.4) with a sample size of 10?

A: We have to find  p(t&gt;1.4)...

Q: For a sample with s = 9, a score of X = 67 corresponds to z = +1.00. What is the sample mean?

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Q: A sample of n = 16 scores is selected from a normal population with σ = 32. If the sample mean of M…

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Q: State the t critical value that would be used for a 99% interval based on a sample size of 37.

A: Given information- Sample size, n = 37 Confidence level, c = 99% So, significance level (α) = 0.01…

Q: If you collect data from a random sample of 10 students and we would like test for statistical…

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Q: A marketing researcher would like to compare the mean amounts that men and women spend on Christmas…

A: Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…

Q: The average cost of a hotel room in New York is said to be $168 per night. A random sample of 25…

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Q: A sample of n = 10 scores has M = 58, s = 12.65, and an estimated standard error of 4 points. Which…

A: The sample size n is 10, the standard deviation is 12.65 and the standard error is 4.

Q: The distribution of the weights of a sample of 1,400 cargo containers is symmetric and bell-shaped.…

A: