An educator was trying to determine the effect of remote learning on middle school aged children. They randomly selected 250 students who spent a full year with in person learning and 190 of them showed similar or improved scores on a set of metrics. They also randomly selected 350 student who spent the year remotely learning and 252 of them showed similar or improved scores. a. Construct a 95% confidence interval for the difference of proportions? b. Based on the confidence interval can you conclude there is a difference between the two groups?

Q: 2. A researcher surveyed 12 men whose parents got divorced. His survey included the age of the…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: memoi meal. people were given memory ests bef their meal and then again after their meal. The data…

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Q: A volunteer wearing a caveman mask was scolded by 158 out of 444 crows he encountered, and the crows…

A: Given information, In a study, a volunteer wear a caveman mask scolded by 158 out of 444 crows he…

Q: A random sample of nine students took 18, 19, 13, 24, 22, 21, 22, 17, and 25 minutes to complete the…

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Q: A. Calculate a 95% confidence interval for the coefficient of height, and interpret it in the…

A: The given variables are volume in cubic feet, height in feet, and diameter in inches of trees.

Q: A recent year was randomly picked from 1985 to the present. In that year, there were 2051 Hispanic…

A: Given, x1 = 2051 n1 = 12328 x2 = 321 n2 = 2441 α = 0.1       To find, 90% confidence interval for…

Q: A learn-to-type software program claims that it can improve your typing skills. To test the claim…

A: We make the following table for the difference from the given information  Typing Speeds (in Words…

Q: A 20-minute consumer survey mailed to 500 adults aged 25 to 34 included a $5 Starbucks gift…

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Q: a) Construct a 95% confidence interval for the slope.

A: a) Let the variable x denote the speed, and y denote the noise. The regression analysis is conducted…

Q: Practice. Testing a vaccine for HIV. Of 8198 subjects given a placebo, 74 became infected with HIV,…

A: (a)Given that,sample one, x1 =74, n1 =8198, p1= x1/n1=0.009sample two, x2 =51, n2 =8197, p2=…

Q: 1. A survey of 224 children of ages 9 to 17 was conducted shortly after 1986 space-shuttle disaster.…

A:

Q: . How many of the 3335 subjects used at least one prescription​ medication? b. Construct a​ 90%…

A: n = 3335 p = 0.804

Q: 1. Your colleague collected a sample of data regarding the mean length of a movie and they computed…

A: It has been given that the confidence interval of the mean length of a movie has been computed on a…

Q: If a 90% confidence interval for the mean is found to be (1.25,4.75) using a sample of n=100, find…

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Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: The random variable flu follows binomial distribution. X ~ B (n, p). The sample size is 337. The…

Q: A group of researchers wants to estimate the true mean skidding distance along a new road in a…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: Cameron and Bailey each take random samples and construct 90% confidence intervals for the…

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Q: Use the technology of your choice to obtain the required Tukey multiple-comparison confidence…

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Q: A researcher was interested in comparing the amount of time spent watching television by women and…

A: Suppose μ1, μ2 are the true population mean time spent watching television by women and men,…

Q: Which of the following would result in the narrowest confidence interval? A. 80% confidence level…

A: The narrowest confidence interval will result from larger sample size and a smaller confidence…

Q: If n=41n=41, ¯xx¯=36, and s=9s=9, find the margin of error for a 80% confidence level.

A: Answer - Given, Sample size n = 41,    x  = 36    and s = 9               80% confidence interval…

Q: A major company would like to assess the impact of using a professional trainer to conduct a…

A: the given values are  M1=17.5 M2=22.7 SS1=100 SS2=124 n1=8 n2=8 S1=SS1n1-1 S1 = 1008-1 S1=3.8…

Q: A large company would like to assess the impact of using a professional trainer to conduct a…

A: We hvae to find corrcet option..

Q: The effectiveness of a weight loss program is to be evaluated by measuring the weight of eight…

A: Obtain the 95% confidence interval for the mean difference. The 95% confidence interval for the mean…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 437 green peas…

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Q: This was a question on my homework and I would like to know if I answered it correctly. Thank you…

A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…

Q: A recent study randomly selected women from various countries around the world and collected…

A:

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Proportion = p =40/334 = 0.119760479041916 Margin of Error = E = 0.04 Confidence Level = 95…

Q: What is the source of variability in the random variable? O A. Random errors OB. The sample size C.…

A:

Q: Refer to the following scenario. An epidemiologist is worried about the prevalence of the flu in…

A: The formula of sample size is, Use EXCEL Procedure for finding the critical value of z.   Follow…

Q: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

A: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

Q: The branch manager of an outlet store​ (Store 1) of a nationwide chain of pet supply stores wants to…

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Q: Ten different families are tested for the number of gallons of water a day they use before and after…

A: From the provided information, The difference between before and after are as follow: Before…

Q: The tobacco industry closely monitors all surveys that involve smoking. One survey showed that among…

A: Confidence interval : Confidence interval is a range of values and it contains the true population…

Q: You are watching a nightly news broadcast on CNN and the reporter says that a 90% confidence…

A: We have to determine which statement is correct for given situation.

Q: Mr. Price calculates a 95% confidence interval for the difference between the proportion of Aaron…

A: The 95% confidence interval for P Rodgers - P Mahomes is given as (-0.05, 0.15). When the repeated…

Q: A learn-to-type software program claims that it can improve your typing skills. To test the claim…

A: Given, Let X1=Before X2=After X1 X2 55 45 43 34 31 31 49 39 45 46 47 34 51 35 32…

Q: 9. A survey asked people, “How many hoursdo you spend watching reality TV shows perweek?”. The…

A: Solution: 9. From the given information, x-bar=10.5, s=3.1 hours and confidence level is 0.90.…

Q: A major company would like to assess the impact of using a professional trainer to conduct a…

A: Control (1) Workshop(2) M = x̅1 = 17.5 SS1 = 100 n1 = 8 M=x̅2 =22.7 SS2 = 124 n2 = 8…

Q: A major company would like to assess the impact of using a professional trainer to conduct a…

A: Null Hypothesis: H0: There is no difference between workshop and control groups mean confidence…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.