a) How many students enjoy both acting and singing? b) How many students enjoy acting or enjoy singing? c) How many students enjoy dancing and singing but not acting? d) How many students enjoy dancing only?

Q: The results of an experiment are said to be statistically significant if A) the observed effect is…

A: Solution :  We want to find the correct option in given MCQ  The results of an experiment are said…

Q: 14) In a survey of 2000 American adults, 57% of women have experienced street verbal harassment…

A: Given P=0.57 n=2000

Q: Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using…

A: given data p = proportion of responds favor the politician's claimclaim : p = 0.5n = 486+400 = 886…

Q: Dog researchers are trying to determine if the brand of dog bed effects how much sleep dogs get. me…

A: x̄1=14.6, sample x̄2=15.7, n1=24, n2=32, s1=23, s2=1.8

Q: Can you recheck and write the a and b portions.

A: (a) The probability that the maximum of X1 and X2 is k, for any k from 1 to n, is the same as the…

Q: 3. A phenomenon is observed many, many times under identical conditions. The proportion of times a…

A: Here use basic definition of statical terms.

Q: 1) Find the mean, median and mode for each set of data. a) 64, 69, 72, 54, 89, 92 b) 6, 0, 8, 2, 9,…

A: “Since you have posted multiple questions with multiple sub-parts, we will provide the solution only…

Q: What is the probability that the monthly demand is within one standard deviation of its expected…

A: According to the question: A company analyzed demand data for the past two years and found that…

Q: Use the probability distribution to complete parts (a) through (d) below. The probability…

A: As per our guidelines we are supposed to answer only first three subparts. The probability…

Q: The accompanying data table contains financial data for 30 random technology companies. One column…

A: Consider the given data which includes the natural logs of both variables. Log Assets Log R&D…

Q: Refer to the accompanying data display that results from a sample of airport data speeds in Mbps.…

A:

Q: Random samples of size 64 are taken from an infinite population whose mean and standard deviation…

A: The given sample size is 64, mean is 190 and standard deviation is 32.

Q: test statistic

A:

Q: ow large a sample should be selected to provide a 95% confidence interval with a margin error of 4?…

A: confidence in terval is=95 % α=1-CI=1-0.95=0.05population standard deviation:σ=20E=4sample size n=?

Q: A random sample of 25 statistics examinations was selected. The average score in the sample was 77…

A: Sample size (n) = 25 Mean x̅ = 77 Sample variance s2 = 169 So, standard deviation (s) = 13…

Q: mple random sample of size n 50 is obtained from a population whose size is N30,000 and whose…

A: Sample size n =50 Population proportion p=0.4

Q: Suppose that X and Y are independent random variables. Define Z - max(X,Y). (a) Show, justifying…

A: Given that X and Y are independent random variables. Here Z=max(X,Y). FX(x) and FY(y) are the cdfs…

Q: The Jackson family is going on a 10-day vacation to a tropical island that has a 33% chance of rain…

A: Number of trials n=10  Success of probability p=0.33 X~binomial (n,p) nCx=n!/x!(n-x)!

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

A: given data, normal distributionμ=0σ=1we have to find out the given probability for the given data.

Q: To test the effectiveness of a liquid supplement that is supposed to help forgetful people with…

A: The ongoing COVID-19 pandemic has brought unprecedented challenges to people worldwide. It has…

Q: Annual starting salaries for college graduates with degrees in business administration are generally…

A: Here given 95% confidence interval, ($20,000 , $40,000)   Required formula to solve this question :…

Q: What generally happens to the sampling error as the sample size is increased? O It gets smaller. O…

A: Here, sampling error as the sample size increases.

Q: The data in the table represent the wealth, in billions of dollars, of six people. Use the data to…

A: The observations of wealth at the population level are: 27, 19, 23, 24, 20, 28 The sample size is 2.…

Q: a. What is the number of degrees of freedom that should be used for finding the critical value /?…

A:

Q: A sample of 56 observations will be taken from an infinite population. The population proportion…

A: Suppose p is the true population proportion.

Q: a) How much more cereal do you expect to be in the large bowl? b) What's the standard deviation of…

A: Let X is the random variable representing the small bowl and Y the random variable representing the…

Q: In a survey of 3092 adults aged 57 through 85 years, it was found that 88.5% of them used at least…

A: n = 3092 Sample proportion (p̂) = 88.5% = 0.885

Q: 1 6.98 5₂ 4.53 . What is the point estimate of the difference between the two population means?…

A: Private colleges and public colleges' data were given

Q: Construct a 95% confidence interval for the true proportion. Sketch the graph of the situation.…

A: Let p be pop. prop. of online courses LBCC offered were taught by full-time faculty. Given that,…

Q: Use the probability distribution to complete parts The probability distribution of number of…

A: the probabilty distribution of number of television par household in a small town.we have to answer…

Q: 4. The chance that a chocolate randomly selected from a box of candy is a raspberry buttercream is…

A: It is given that  P( raspberry buttercream ) = 0.2 P( caramel chew ) = 0.1

Q: The p-value is correct, but the z-score is incorrect

A: It is given that a sample of 200 homes sold in which 113 homes with sales prices over median and 87…

Q: Company Reputation Stock Purchase Company A 1 Company B Company c Company D Company E Company F…

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

Q: Suppose a simple random sample of size n =150 is obtained from a population whose size is N =15,000…

A: Sample size n =150 Population size N=15000 Population proportion p=0.8

Q: percent of men meeting these height requirements.

A: Assume that the heights of American men are normally distributed with a mean of 69.0 inches and a…

Q: 9.24 You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting…

A: a. To test the hypothesis, we will use a two-tailed t-test since we are testing if the population…

Q: Assume a standardized IQ test exists that possesses a normal distribution and has a mean score of…

A: Given: Assume a standardized IQ test exists that possesses a normal distribution and has a mean…

Q: In a survey of 3092 adults aged 57 through 85 years, it was found that 88.5% of them used at least…

A: n = 3092 Sample proportion (p̂) = 88.5% = 0.885

Q: 5. A Senator wants to know what the voters of his state think of proposed legislation on gun…

A: Population is larger in size compare to sample. Population is the whole set of observations that are…

Q: 4. A statistic is said to be unbiased if A) both the person who calculated the statistic and the…

A: Given data :  A statistic is said to be unbiased if A) both the person who calculated the statistic…

Q: A random sample of 45 Hollywood movies made since year 2000 had a mean length of 111.7 minutes, with…

A: sample size (n) = 45sample mean ( x¯ ) = 111.7sample standard deviatio (s) =13.895% ci for…

Q: d. Describe the distribution using the following characteristics: a. What is the shape of…

A: The answers are given in steps below.

Q: At a local college, 213 of the male students are smokers and 497 are non-smokers. Of the female…

A: The event M is a male student who is a smoker The event F is a female student who is a smoker There…

Q: For the following set of scores 3 10 7 2 6 7 5 4 5 9 95 5 Find the Range, Number of Class and Class…

A: Given data: 3, 7, 6, 5, 5, 9, 6, 4, 6, 8, 10, 2, 7, 4, 9, 5, 6, 3, 8

Q: - A data set about speed dating includes "like" ratings of male dates made by the female dates. The…

A:

Q: For which of the following situations would a repeated-measures research design be appropriate?…

A: A repeated-measures research design would be appropriate for option b, comparing pain tolerance with…

Q: Graphic entitled “Number of Students on Central Plaza on a Typical Week Day” Origin unknown 1. What…

A: Here we are given a graph where the data based on number of Students on Central Plaza on a Typical…

Q: The chi-squared test statistic is calculated from the sum of (____ expected…

A: Given , The chi-squared test statistic is calculated from the sum of (__   values -expected…

Q: A method for calculating 95% Confidence Intervals for proportions is the: Agresti-Coull Method…

A: The method for calculating 95% Confidence Intervals for proportions is the Agresti-Coull Method.

Q: 5. Suppose that the number of defectives in a certain type of magnetic tape measure from a local…

A: the average number of defectives per 1000 feet of magnetic tape is given as 3. Let X (Number of…