Calculate the percentile for a student whose exam score is 81. Round your answer to the nearest whole number. x 50 57 58 60 60 64 66 67 67 70 72 75 75 75 79 80 83 83 83 86 87 87 88 89 95 96 96 99

Q: A fair six-Sided die is rolled. Let event A = the outcome is less that 4. Let event B= the outcome…

A: It is given that The sample space for roling a die isS = { 1, 2, 3, 4, 5, 6 }

Q: b) Identify the value of the margin of error E. E= (Round to three decimal places as needed.)

A: The data provided in the question is as follows:-Sample size Number of successes Confidence level…

Q: Bob is playing a game by rolling a fair die. If he rolls a 2. Bob win $200. If it is not a '2', he…

A: A fair die is rolled by Bob.If he rolls a 2, he wins $200.If he doesn't roll a 2, he loses $20.

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A: To determine what percentage of college students enjoy statistics more and what percentage enjoy…

Q: Find the indicated critical value. ²0.05

A: Solution-:For We want to find the critical value

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A: Given that,A food safety guideline is that the mercury in the fish should be below 1 PPM. The data…

Q: The relationship between hours of preparation and average score on a field exam routinely…

A: The provided information is as follows:The scatter plot represents the hours between the hours of…

Q: "Americans in this decade are less likely than in the prior decade to say they want to lose weight,…

A: Americans in this decade are less likely than in the prior decade to say they want to lose weight,…

Q: Assuming the coin is biased, and the probability of a Head is 0.9, work out the theoretical mean and…

A: A single biased coin is tossed once.

Q: The table below displays the diagnoses of multiple sclerosis for two neurologists. The categories…

A: Given the table displays the diagnoses of multiple sclerosis for two neurologists. The categories…

Q: Let S = {S₁, S₂, S3, S4, S5} be a sample space with events A = {S₂, S3, S5}, B = {S₁, S5}, and D =…

A: The given data is as follows:OutcomeProbability

Q: Determine of whether strong correlation exisits as well as whether it is positive or negative

A: Here we have given scatter plot and we have to identify whether weak or strong correlation also…

Q: 1. How many yen could you get per dollar at the earliest date shown on the chart? Explain. 2. How…

A: The earliest date is on the extreme left corner of the given chart i.e., about 1970. And it is…

Q: help my answer is wrong. Based on a random sample of 50, a 95% confidence interval for the…

A: Given a random sample of size 50 and a confidence interval of 95%.The confidence interval for…

Q: The speed of greyhounds is normally distributed with a standard deviation of 0.15 mph. How many dogs…

A: Population standard deviation()=0.15Margin of error(E)=0.05

Q: Let x be the number of successes observed in a sample of n = 7 items selected from a population of…

A: Sample size(n)=7population size(N)=14Number of succeses(M)=8Given that x be the number of successes…

Q: Calculate a 99 % confidence interval for μ for each of the following situations:

A: Let  be the population mean.Given that,Population standard deviation Confidence level

Q: Shelia's doctor is concerned that she may suffer from gestational diabetes (high blood glucose…

A: Shelia's glucose level (L) follows a Normal distribution with a mean (μ) of 127 mg/dl  standard…

Q: The graph to the right shows the number of cities with certain average annual raintal amounts (in…

A: Nominal level: The data is classified into different categories, in meaningless order.Ordinal level:…

Q: Based on the information above, represent the findings graphically using stacked chart

A: Segolame is a final-year student who is collecting data for his research project.Data is given on…

Q: Remix Bob is playing a game by rolling, а fair die. If he rolls a '2. Bob win $200. If it is not a…

A: The game involves a fair die. For a rolled face of "2", $200 is won.For a rolled face of "not 2",…

Q: Scores on the ACT college entrance exam follow a normal distribution with mean 21 and standard…

A: Mean()=21standard deviation()=5z-score=-0.6

Q: Star, Incorporated, used Excel to run a least-squs regression analysis, which resulted in the…

A: Let  be the cost, and      be the production.R Square:

Q: May manages a $10 billion dollar hedge fund and is paid based on her performance. Her management…

A: May manages a $10 Bn hedge fund.Loss upto $1 Bn will result in 0 bonus. Losses exceeding $1 Bn will…

Q: Bob thinks there is something wrong with Excel's fitted regression. What do you say? ES III!…

A:

Q: A high leverage data point is a data point that has particularly high influence on the regression…

A: It is required to determine whether the statement is true or false.

Q: he estimate of the population proportion should be within plus or minus .05, with a 95% level of…

A:

Q: What is the inter-quartile range for the following data? You must show work. 27, 29, 29, 30, 24, 25,…

A: From the provided information,The data values in ascending order are as follow:4, 8, 17, 23, 24, 25,…

Q: When extreme values are present in a set of data, which pair of the following descriptive summary…

A: Extreme values are values that are significantly different from the other values in a data set.

Q: 1. Let X₁ and X₂ be the sample means from two independent samples, each of size n, from a common…

A: To find a bound for the probability P(||)∣>>σ/5​) using Chebyshev's inequality, we can start…

Q: 12. Let the random variable X be the ounces of soda in each can. Under normal operation X is a…

A: Let the random variable  be the ounces of soda in each can, & it follows a normal…

Q: What are the hypotheses for testing to see if a correlation is statistically significant? Hor=0:…

A: Null hypothesis:The null hypothesis defined as whether there is no difference in the test or not and…

Q: SSB.SSW-SST Or sum of squares between plus sum of squares within equals sum of squares total. True…

A: Given,3 statements and to answer whether they are true or false.

Q: ue or false the x axis is a horizontal asymtote for all normal distributions true or false the…

A: It is to be known that for a normal distribution, its left and right tail never touches the X-axis…

Q: Suppose a new drug is intended to improve walking distance in patients with Parkinson Disease A…

A: The data shows the patients walking distance in feet before and after trying the drug for 9 weeks.

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget…

A: The mean is 45 ounces and the standard deviation is 9 ounces. The distribution of widget weights is…

Q: F(x) = 1 2 0 + 1 3 (x-4) 5x - 44 (5 (a) Compute P(X < 0). 0.5 x < -2 -2≤ x < 2 2 ≤ x (b) Compute…

A: According to the Bartleby guidelines experts solve only one question and maximum three subparts of…

Q: Using the image attached, please assist with the following showing all working.  a.  Would the…

A: Given the table shows the number of pages printed of the last six books and the cost of the items…

Q: Based on a survey, 34% of likely voters would be willing to vote by internet instead of the…

A: P=34%=0.341-P=0.66n=15p(X=12) =?

Q: Calculate the marginal totals and add them to the table. b) Find the marginal distribution of…

A: The data is given on the no. of students graduating from college with degrees in several…

Q: 1. This is about estimating the variance of a normal distribution. Recall that the pdf of a normal…

A: Xi ~N(μ,σ2) ; i=1,2,...,n

Q: A charity claims that a proportion of 0.75 of donations go to communities were the average family…

A: The proportion of donations claimed by the charity is 0.75Total number of communities under study,…

Q: Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a…

A: Population mean sample size n= 45sample mean = 64.1

Q: (a) Find a 90% confidence interval for μ 1 <μ< (b) Find a 95% confidence interval for μ <μ< (c) Find…

A: The sample size is 70, the sample mean is 24.1 and the population standard deviation is 3.68.

Q: The u and o for a uniform continuous distribution with a minimum value of 115 and a maximum value o…

A: A uniform continuous distribution with a minimum value of 115 and a maximum value of 183.X ~…

Q: A number of randomly selected heterosexual married couples were surveyed about their candidate…

A: This a test of chi -square independent test . In which,we haveHypothesis are Null hypothesis H0:…

Q: Based on the above statistic, using a chi-square sampling distribution with 1 degree of freedom, the…

A: Hypothesis is an assumption that is being tested.

Q: An article gave a scatter plot along with the least squares line of x = rainfall volume (m³) and y =…

A: xy7412101413171423153025402747455538674672538471968211299127104

Q: 1. A research group is interested in investigating whether room lighting has an influence on memory…

A: Consider the given data: BrightDim355354744273346512251049735104268756528817285817998945107583646

Q: Coin with random bias. You are given a coin but are not told what its bias (probability of heads)…

A: Given,HenceletHence