The standard deviation of the certain distribution is 9, what is its variance?

Q: Choose the letter of the correct answer. 1. In one tailed test, in which critical values below will…

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Q: Your Health Insurance Company Charges a Premium of $2,000 above the Actuarially Fair Premium…

A: GivenThe probability of staying healthy =710=0.7The probability of getting Sick =310=0.3 The income…

Q: A marketing company is trying out 4 different commercial advertisements and want to test which one…

A: Null Hypothesis: H0: The means of the four commercial groups are same. Alternative Hypothesis: H1:…

Q: Use the following information for this question: You are giveni- 5% and the following values: SE. 45…

A: Given       Insurance type : 10-year temporary life annuity Deferment period : 10 years…

Q: Please choose the statement that is false about random number generation: O For a linear congruent…

A: The objective is to choose the false statement about random number generator.  For a linear…

Q: You are testing the claim that the proportion of men who own cats is larger than the proportion of…

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Q: 1. A random variable X has the following probability mass function. Pr(X = x) 1 1 2. 1 24 1 19…

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Q: The mean lifetime of a car engine is believed to be greater than 175,000 miles. Sample data are: n=…

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Q: A study shows that running increases the percent resting metabolic rate (RMR) in older women. The…

A: Given information: The average RMR of 35 elderly women runners was 32.1% higher than the average of…

Q: Company XYZ know that replacement times for the quartz time pieces it produces an with a mean of…

A: Solution

Q: A marketing expert for a pasta-making company believes that 40% of pasta lovers prefer lasagna. If…

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Q: Find the range of the data set.   Range=enter your response here ​(Round to the nearest tenth as​…

A: Given that; 26.6   29.4   35.5   29.6   45.5   34.5   32.5   25.1   37.7   23.2     From this data…

Q: 13. Zoe wants to see if favorite genre of movie is associated with a person's gender. She collects…

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Q: The number (in thousands) of new houses sold each month in a country over a four year period is…

A: Given information: Year Month Price Year 1 January 24   February 24   March 36   April 43…

Q: A manufacture makes light-weight sneakers, and claim that the average weight of one sneaker is no…

A: Given that  A manufacture makes light-weight sneakers, and claim that the average weight of one…

Q: A simple random sample of 100 bags of tortilla chips produced by Company X is selected every hour…

A: Given that  X=18 , n=100

Q: A student was asked to find a 98% confidence interval for widget width using data from a random…

A: Given 98% CI for population mean μ 10 < μ < 34.7 , n=29

Q: • Compute for the mean, the median, and the mode of each set of ungrouped data. 1. 12, 31, 29, 6,…

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Q: Find the​ mean, variance, and standard deviation of the probability distribution. ​(b) Interpret the…

A: Given that  Probability mass function of X is  x 1 2 3 4 5 P(X=x) 0.409 0.269 0.214 0.099 0.009

Q: 12. You are provided the monthly returns data for an investment fund and its benchmark for the last…

A: *Answer:

Q: 9. The caffeine content of 8-ounce cans of a certain cola drink is approximately normally…

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Q: study claims that over 40% of those who suffer from osteoarthritis receive measurable relief from an…

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Q: Use the sample data and confidence level given below complete parts (a) through (d). A drug used to…

A: Given that  Sample size n =4429 Favorable cases x =191 Sample proportion p^=x/n  =191/4429 = 0.043

Q: Construct a 90% confidence interval for the mean weight of this company’s golf balls. Assume…

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Q: Using Excel, conduct a t-test (at the alpha = 0.10 significance level) on whether the mean of X1 is…

A: The test hypotheses are: Null hypothesis: H0: μ = 100. Alternative hypothesis: H1: μ ≠ 100.

Q: The area under the given normal curve and above the interval (42,00) on the horizontal axis is…

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Q: O The related coefficient of determination is 0.1 O All of the other answers are true O Only 10% of…

A: We have given that the sample correlation coefficient between X and Y is 0.1

Q: Outcome HH HT TH TT Frequency 1,400 950 1,600 50 Determine the relative frequency distribution.

A: Solution-: We have following frequency distribution: Outcome HH HT TH TT Frequency 1400 950…

Q: Test a claim that the mean amount of lead in the air in U.S. cities is less than 0.036 microgram per…

A: Given that  Sample size n =54 Sample mean =0.039 Sample standard deviation =0.068

Q: Compute for the mean, the median, and the mode of each set of ungrouped data. Scores in English Test…

A: Scores Frequency 16-20 2 21-25 7 26-30 14 31-35 8 36-40 8 41-45 1

Q: For Numbers 9 and 10: Clean precipitation has a pH of 5.0 to 5.5 but in a certain county,…

A: Hypothesis for shapiro will test  H0:the data is normally distributed  H1: the data is not normally…

Q: 1. XYZ Cable corporation employs 2,500 people. If a random sample of 165 is taken from the entire…

A: We answer up to three subparts of a problem. Thus, we'll be answering the first three sub parts.…

Q: Small-business telephone users were surveyed 6 months after access to carriers other than Carrier A…

A: We want test the hypothesis

Q: There are two random variables X and Y,

A: Given that  ρXY=0.7 A=2.5X+1 B=4Y+2

Q: 1. Answer what is asked for in the following problems: a. A set of data has 50 observations. How…

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

Q: t proportion of T values do you expect to exceed the evidence bars against H0:mu = 23 grams when…

A: Given: Hypothesized mean = 23 Significance level = 0.05 The test is two tailed.

Q: Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and…

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Q: Sketch the graph of the continuous probability function and find its CDF f(x) = ; - 치x-3| 1 1 |x –…

A: Given: f(x)=12-14x-3              1≤x≤5

Q: A sample of 60 Grade 12 studentsʻ ages was obtained t o estimate the mean age of all Grade 12 4.…

A: Here AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION  here given, n = 60 sample mean  =  17.3…

Q: A marketing expert for a pasta-making company believes that 40% of pasta lovers prefer lasagna. If…

A: Given that  A marketing expert for a pasta-making company believes that 40% of pasta lovers prefer…

Q: f a random sample of 165 is taken from the entire population by systematic sampling. From which…

A: Systematic sampling: When the population units occur in a sequence or pattern and a sample of size n…

Q: What is the shape of the distribution for both plots? This graph was from excel.

A: Given that  Two box plot are given one in blue color and other is red color

Q: 23. Telephone calls from an office are monitored and found to have a mean duration of 452 s and a…

A: Let X be the random variable from normal distribution with mean (μ) = 452 s, standard deviation (σ)…

Q: You are conducting a Goodness of Fit hypothesis test for the claim that the 4 categories occur with…

A: From the given information, the total number of observed frequencies is 119 (=42+54+11+12).

Q: Find the range of the following given and explain why. 1. -2, -10, -6, 17, -1, -2 2. -5, -1, -8,…

A: Given that  1. -2, -10, -6, 17, -1, -2 2. -5, -1, -8, -15, 4, 7, 11 3.  4, 10, 8, 32, 7, 9, 16 Note:…

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A: The mean is 241, the standard deviation is 70 and the sample size is 34.

Q: In a survey of 3245 ​adults, 1449 say they have started paying bills online in the last year.…

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Q: A small p-value indicates which of the following? I: the paramtert value indicated by the null…

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Q: Using person-level data on wages from a country where men have more access to education than women,…

A: The regression equation is given as  Wage = 3+0.08*male+0.5*education+0.1*experience

Q: Which of the following is(are) TRUE about pairwise mean comparison? I Two means which are declared…

A: Given information: The information about Tukey HSD is given.