elissa asked her friends how many times they visited the cinema last month. The frequency polygon shows her results.     How many people went to the cinema less than 3 times that week?

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 24 for the population…

A: standard deviation()=24Margin of error(E)=6confidence level=90%

Q: Using the Binomial distribution, If n=7 and p=0.6, find P(x=3)

A: n=7 and p=0.6, find P(x=3)

Q: What effect does blocking by gender have on the standard deviation of recumbent length for each…

A: We know that-When you block by gender, you are essentially creating separate groups for males and…

Q: intending to estimate a population mean μ with the following sample. 32 39.3 38.9 39.6 3.6 55.1 30.6…

A: We have given the following data32 39.3 38.9 39.6 3.6 55.1 30.6 41.5

Q: 1. Find the point estimate for the birth weights. Round your answer to 2 decimal places. 2.…

A: the weights in ascending order are:- [ 1147, 1705, 1924, 2120, 2181, 2304, 2349, 2357, 2395, 2450,…

Q: Construct a  99%  confidence interval for the mean number of letter sounds identified in one minute.…

A: It is given that Sample mean = 34.13Sample std. deviation = 23.95Sample size = 145Confidence level =…

Q: Coronary bypass surgery: A healthcare agency reported that 48% of people who had coronary bypass…

A: Total number of patients n=14Probability p=0.48q=0.52

Q: Find the y-intercept of the median-median line for the dataset. x 2,3,4,5,7,8,10,12,16,18,21 Y…

A: We have given the following tableXY2134465377861010121716201821213

Q: Hip surgery: In a sample of  118  hip surgeries of a certain type, the average surgery time was…

A: From the provided information,Confidence level = 99%

Q: 5) Recognize if a problem represents a binomial random variable. (Circle YES or NO) a) A certain bus…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted.Given…

Q: Students in a statistics class took their second test. The following are the scores they earned.…

A: The given information is about the scores.Let X denote the test scores.

Q: Suppose the probability that Jimmy gets a hit on a given at-bat is 1⁄4. Let X denote the number of…

A: In this case, each of the at-bats has the only option of being "a hit" (defined as success) or "not…

Q: A palindrome is a word, such as "radar" reads the same forward and backward. How many different…

A: The number of alphabets is 6.As a 15-letter palindrome is to be formed, the order of the letters is…

Q: Three hundred participants were asked to think of colors and write them down. After a 15 minute…

A: The hypothesis test is used for testing a claim which helps in making important business decisions.

Q: (a) How many observations do you have in the data set? (b) Write down the corresponding regression…

A: The results of the regression of sales revenue on quality level and advertisement investments are…

Q: The contingency table to the right shows counts of the types of gasoline bought during the week and…

A:

Q: A lonely grandma has 12 black cats, 7 grey cats, and 11 orange cats. She decides to give them all a…

A: We have given that a lonely grandma has 12 black cats, 7 grey cats, and 11 orange cats. So, total…

Q: What is the probability that more than 6 find their jobs stressful?

A: In a poll conducted by the General Social Survey, 81% of respondents said their jobs were sometimes…

Q: 8.11

A: n=134X=18

Q: To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 45…

A: From the provided informationSample size (n) = 45Sample mean = 52.4Sample standard deviation…

Q: Find the probability that a person flipping a coin gets (a) the seventh head on the eleventh flip,…

A: Given data isWe have to find probability forseventh head on the eleventh flipfirst head on third…

Q: ake Twitter followers: Many celebrities and public figures have Twitter accounts with large numbers…

A: Given: sample of 58 twitter audits,  the mean percentage of fake followers was   with a standard…

Q: Assume an asset price S_t follows the geometric Brownian motion, dS_t = µS_tdt + σS_dW_t, where µ…

A:

Q: sider randomly selecting a student at a certain university, and let A denote the event that the 1) =…

A: P(A) = 0.50, P(B) = 0.35, P(A ∩ B) = 0.25Note: According to bartelbyquestion answer guidelines an…

Q: (a) State the null hypothesis H. and the alternative hypothesis H₁. 0 H:0 (b) Determine the type of…

A: It is given that Popuation mean = 1775Sample mean = 1793Population std. deviation = 80Sample size =…

Q: A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of 7.0…

A: Given information:The hypothesized value of the population mean is 7Claim: the mean amount of coffee…

Q: 1. Suppose that X has the gamma distribution with pa- rameters a and B, and c is a positive…

A: Given:The pdf of X is given by:where x>0, and is the gamma function.

Q: At a particular point in time, the stock market took big swings up and down. A survey of 1,004 adult…

A: A survey of 1,004 adults investors asked how often they tracked their portfolio.

Q: 69 How do you prefer to get the news? Today, you have numerous options for getting the news: print…

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

Q: Assume that matched pairs of data from a poll of Internet users who were asked if they make travel…

A:

Q: The number of first-year students who were admitted and accepted for the 2022 fall semester at Pitt…

A: Number of students admitted to Dietrich School = 3431Total students = 4927The probability that a…

Q: Without using technical​ terms, state a final conclusion that addresses the original claim. Which of…

A: It is given that P-value = 0.0707Significance level, α = 0.01

Q: Is smoking during pregnancy associated with premature births? To investigate this question,…

A: We have given that Sample size (n) = 110Sample mean () = 260Standard deviations () = 16Confidence…

Q: NW 1.88 Company credit card records. A bank officer is analyzing the transactions of a company…

A: From the information, given thatLet E1 denotes the event that the bank officer randomly selects a…

Q: d) If you hadn't already taken the sample listed above, what sample size would be required so that…

A:

Q: A particle moves along the following graph: 0 1 2 so that o o If the particle is at 0, it will next…

A: Given that a particle moves along the following graph: If the particle is at 0, it will next move to…

Q: A factory manager collected data on the number of equipment breakdowns per day. From those​ data,…

A: w012P(W=w)0.650.200.015

Q: To examine the effect of relaxing music on math test performance, a researcher wants to compare the…

A: The provided information is as follows:The data summary for the math test with music isThe data…

Q: Given that X = 1, determine the conditional pmf of Y—i.e., pY|X(0|1), pY|X(1|1), pY|X(2|1). (Round…

A: Let X = the no. of hoses being used on the self-service island at a particular time.Y = the no. of…

Q: A random sample of likely voters showed that 35% planned to vote for Candidate A, with a margin of…

A: The number of voters who plan to vote for Candidate A is 35%.i.e. The margin of error is 2%.i.e. The…

Q: A recent study measured owners' satisfaction with the design, content, layout, and performance of…

A: The given information is about the satisfaction ratings of the different cars. The number of…

Q: Dr. Sloane is doing a study to test the association between alcohol consumption and the occurrence…

A: All the odds ratios (except for 0 drinks) are different from 1 and all the p-values are less than…

Q: Use the given information to find the number of degrees of freedom, the critical values x² and X,…

A: n=20s=0.23confidence level=80%

Q: f (x) = c/x3 for 1 < x < ∞; Find the constant c so that f (x) is a pdf of some random variable X,…

A: Given the functionwant to find the value of c such that the given function will be pdf. also wants…

Q: The average number of field mice per acre in a 7-acre wheat field is estimated to be 14. (a) Find…

A: Let X represent the number of field mice found. The estimated value is 14.

Q: The table below lists measured amounts of redshift and the distances (billions of light-years) to…

A: We have given a data  redshift (X)distance…

Q: A cellphone provider has the business objective of wanting to determine the proportion of…

A: Given : n = 500x = 135 = x/n = 135/500 = 0.27

Q: Websites for small businesses. Visual Objects, a portfolio website, surveyed 529 small businesses…

A: Total number of small businesses involved in the study, n = 529Number of small businesses that have…

Q: Web crawlers need to estimate the frequency of changes to Web sites to maintain a current index for…

A: From the given information  assume that the changes to a Web site follow a Poisson process with a…

Q: On the basis of extensive tests, the yield point of a particular type of mild steel-reinforcing bar…

A: The given data is as follows:Population standard deviation, Sample size, Sample mean,