(a) The mean of the sampling distribution of ?̂ p^ is:  (b) The standard deviation of the sampling distribution of ?̂ p^ is:

Q: Mean of 100 observations is found to be 40. If at the time of computation two items are wrongly…

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Q: I An administrator wants to investigate the relationship between the numbers of unauthorized days…

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Q: Blood pressure is 127.58 sample of 41 males,, 35-44 in age.. blood pressure of 5.76. Find 95% co…

A: Given: Sample meanx¯=127.58Sample size(n)=41Sample standard deviation(s)=5.76

Q: The correlation between the depth (in feet) and length (in feet) for a sample of caves is found to…

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Q: If the correlation coefficient between number of years of experience of an employee and the monthly…

A: The correlation coefficient between number of years of experience of an employee and the monthly…

Q: Use the formula to find the standard error of the distribution of differences in sample means,…

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Q: The mean salary paid to 1000 employees of a factory was found to be Rs. 2804. Later on it was…

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Q: Mean of 100 items is found to be 30. If at the time of calculation two items are wrongly taken as 32…

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Q: What is the percentage of scores that lie between a z score of -2 and a z score of 1?

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Q: If α/2 = 0.05, then (1-α)100% describes 95% con5dence. True or false? Explain why the correct…

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Q: Twelve percent of the world's population is left-handed. A researcher daims that left-handed…

A: Solution: From the given information, the out of 1650 artists 10% are left-handed. The population…

Q: Use the formula to find the standard error of the distribution of differences in sample means,…

A: The answer is attached below,

Q: researcher computes the correlation coefficient r= -0.1389 for an explanatory and response variable.…

A: The correlation coefficient(r)=-0.1389

Q: In ? = 48 independent trials believed to be representative of trials at a particular lab- oratory,…

A: The objective of this question is to find the 95% confidence interval (CI) for the true proportion,…

Q: Suppose that 39% of all patrons at Goldy's gym spend more than 10 hours a week at the gym. Goldy's…

A: Given that  n=60 , p=39%=0.39 , q=1-p=1-0.39=0.61 X~Binomial(n=60 , p=0.39) P=Probability Goldy's…

Q: If X ~B(190,0.34), find mean and variance of x. (Rounded in 3dp.)

A: X ~B(190,0.34) Given a Binomial Distribution X ~B(n,p) Here, n = 190 , p = 0.34

Q: Suppose that historically, the proportion of people who trade in their old car to a car dealer when…

A: Givensample size(n)=115No.of old cars(x)=46p^=xn=46115=0.40

Q: 1337 + (2) =?

A: We have to find the value of given complex number.

Q: Define P-value?

A:

Q: 1. Suppose a sample of three random variables X1, X2, X3 that are independent and identically…

A: Let's solve each part:a)To find the density function of the median of the sample, let's first find…

Q: In carrying out chi-square analysis, if one or more of the observed frequencies is less than five…

A: Given statement: In carrying out chi-square analysis, if one or more of the observed frequencies is…

Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A: Given data, Aptitude score Frequency 0 2 1 3 2 2 3 2 4 3 5 4

Q: what does it mean if P-Value is extremely low?

A: The p-value or the calculated probability can be defined as the probability of finding the observed…

Q: The correlation coefficient may assume any value between ?

A: The correlation coefficient between the two variables gives the linear relationship between the two.…

Q: Assume that the correlation coefficient between the scores of a pre- and post- assessment that you…

A: 1. Correlation: A statistical method that is applied between the pairs of variables to check how the…

Q: The standard error of the mean (Qx) is a(n)

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Q: The mean and standard deviation of 20 items was found to be 10 and 2 respectively. Later it was…

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Q: A professor wanted to study whether there was an association between a person's age and their…

A: The question is about categorical data analysis Given :   To find : a ) chi sq. test for…

Q: The correlation coefficient betweem anxiaty and exam scorea of the students is -0.6 .so what is the…

A: Here correlation coefficient is negative. Therefore as exam score increases anxiaty decreases.  60℅…

Q: What is the 87.7 percentile of X~N(12,3)

A: Answer: Given that, X~N(12,3)

Q: The odds difference = exp((0.15*20)-(0.15*30)), the standard error(se) = 0.06 which is on the scale…

A: From the given information, Consider, odds difference = exp((0.15*20)-(0.15*30)) and  standard…

Q: An analysis of variance produces SSbetween = 40, SSwithin = 60, and an F-ratio with df = 2, 15. For…

A: It is given that: SSBetween=40SSWithin=60df1=dfBetween=2df2=dfWithin=15

Q: The correlation coefficient ranges from which two values?

A: The correlation coefficient ranges from which two values

Q: What should we do with a small p-value?

A: The P-value is the probability we get the value of the test statistic, or something "more extreme"…

Q: Find coefficient of association between literacy and employment and comment on your result using the…

A: From the question, we have the following values:Total number of adults (N) = 1000Total number of…