A mail-order company has a 9% success rate. If it mails advertisements to 500 people, find the probability of getting fewer than 38 sales. Group of answer choices 0.1379 0.1539 0.1210 0.3790

Q: Which of these would not make you question the results of a study? A. The source of the study…

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A: It is given that the different statements. Here, need to find out the correct choice for the given…

Q: pathy: The Interpersonal Reactivity Index is a survey designed to assess four different types of…

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Q: A popular restaurant takes a random sample of 25 customers and records how long each occupied a…

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Q: (1) The mean square value of X(t) is E[X?(t)] = Rxx (0) It is equal to the power of the process…

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Q: what if the standard deviation was 30, instead of 60

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Q: Where did 1- 0.9545 came from?

A: Solution-: We want to find where did 1-0.9545 came from?

Q: Use the t-distribution to find a confidence interval for a mean μμ given the relevant sample…

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Q: Suppose the probability of an IRS audit is 4.0 percent for U.S. taxpayers who file form 1040 and who…

A: It is given that the probability of an IRS audit for U.S. taxpayers who file form 1040 and who…

Q: Regardless of the kind of workout a gym goer does, the mean time spent on the treadmill is 45…

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Q: Hospital visits: According to a health agency, there were 409,714 hosital visits for asthma-related…

A: Given,Total no.of hospital visits=409,714and no.of visits between 1 and 17 years old =103,050

Q: 3 4 2x + /x | dx .

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Q: 6 7 260 301 338 417 504 623 649 714 867 907 Identify the 5 number summary (min, Q1, median, Q3,…

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Q: If X1, X2,..., X, constitute a random sample of size from a population given by 2(0 – x) for 0 <x <0…

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Q: Big fish: A sample of 150 flounder of a certain species have sample mean weight 23.5 grams.…

A: The random variable weight follows normal distribution. We have to write the null and alternative…

Q: n a right-tailed test, the rejection lies in the ________ tails of distribution. a. Up b. Left c.…

A: Given that  Right tailed test    We know that  For right tailed test , the rejection region lies in…

Q: 5- calculate the Standard deviation of the following sub image.* 10 6 10 7 7 4 Your answer 4.

A: Given problem Given that   Steps to find Standard deviation :   i) Mean should be calculated by…

Q: 3. Find the, lower quartile, upper quartile, interquartile range, and percentile 49 of the following…

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Q: x 0 2 2 4 5 y -1 0 4 6 7 calculate: sum of the xy values, sum…

A: Given x   0   2   2     4   5   y   -1   0   4   6   7

Q: Find the range for this list of numbers 4 35 58 97 22 29 7 78 11 46 93 66 27 54 Range %3D

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Q: A random sample of 500 males included 215 that approved of the performance of a President.  A random…

A: Solution-: Given:  n1=500,n2=500,x1=215,x2=185,α=0.05 We want to calculate  (a) p1^, and q1^, p2^,…

Q: An insurance company offers four different deductible levels-none, low, medium, and high-for its…

A: Given Information: Auto/Homeowner N L M H L 0.04 0.08 0.05 0.02 M 0.07 0.11 0.20 0.08 H…

Q: It is claimed that 75% of puppies are house-trained by the time they are 6 months old. To…

A: Given,Test statistic(Z)=1.47P-value=0.0708α=0.05H0:P=0.75H1:P&gt;0.75

Q: Lisa asked students in two classes to name their favorite school subject. She summarized her survey…

A: It is given that:

Q: local school board wants to determine if the proportion of households in the district that would…

A: Given P value=0.04 Alpha=0.05

Q: A school guidance counselor is concerned that a greater proportion of high school students are…

A: Solution-: Given: P=0.28, n=80 Are the conditions for inference met for conducting a z-test for one…

Q: Consider purchasing a system of audio components consisting of a receiver, a pair of speakers, and a…

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Q: A teacher has two large containers filled with blue, red, and green beads, and claims the proportion…

A: Let p1= the true proportion of red beads in container 1 and p2= the true proportion of red beads in…

Q: Do People Think the Sun Goes around the Earth? In the 2018 General Social Survey, people were asked…

A: According to our policy we can answer only first three part for remaining please repost the…

Q: A cellular battery manufacturer claims that his battery when fully charged has mean life of 24 hours…

A: The set or collection of all possible observations is defined as the population.

Q: The population of a particular country consists of three ethnic groups. Each individual belongs to…

A: The question is about prob. dist. Given :

Q: Prof. Jacob wants to know, with 90% confidence, the proportion of students who like to eat in the…

A: Given, Confidence interval, α = 90 Sample proportion, p^ = 0.62 Margin of error, M.E = 0.025

Q: Ircraft not discovered do not have such a locator. Suppose a light aircraft has disappeare (a) If it…

A: Given, 75% of the light aircraft that disappear while in flight in a certain country are…

Q: shirt factory has just installed a boiler that will last for 35 years.  It is expected that there…

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Q: We want to predict the record time for women in a Scottish Hill Climb race. There are two x…

A: Decision Rule: If p-value ≤ α, then the variable is significant Let alpha=0.05. Term P value…

Q: Find a confidence interval for H or p. a. A random sample of 19 adults participated in a four-month…

A: We have given that,  (a)  Sample mean (x̄) = 9.2, sample size (n) = 19 and standard deviation (s) =…

Q: What test statistic will be used if the sample size is below 30? a. t-test b. z-test c.…

A: What test statistic will be used if the sample size is below 30?

Q: chi squar =E(O-E)2/E True O False O

A: See the solution

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

A: The expected proportions of 4 categories are given.

Q: ollowing data shows the daily sales of food vendors occupying the streets of Divisoria. 5060 6700…

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Q: What is the expected frequency for the "31-64 yr" and "received recommended care" category? tonthr…

A: The expected count is calculated as E = (row total × column total)/total

Q: If a random process X(1) has a non-zero mean value, E[X(t)]#0 and ergodic with no periodic…

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Q: Find each of the shaded areas under the standard normal curve using a TI-84 calculator. Round the…

A: Let Z be the random variable from standard normal distribution with mean = 0 and standard deviation…

Q: In an article issued by a nutrition magazine, the recommended Vitamin C intake per day for Filipino…

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Q: Historically (from about 2001 to 2015), about 59% of Americans believed that Earth’s temperature was…

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Q: When describing a data set, the mean is used with and the median is sed with Z-scores are used to…

A: When describing a data set, the mean is used with average and the median is used with middle value.

Q: g on the prior mean is

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Q: You wish to test the following claim (H1H1) at a significance level of α=0.10α=0.10.…

A: Solution-: Given: μ0=51.8, x¯=42.4, n=19, s=13.2, α=0.10 Hypothesis: To test, H0:μ=μ0=51.8 Vs…

Q: A fitness center is interested in finding a 90% confidence interval for the mean number of days per…

A: From the provided information, Sample size (n) = 263 Sample mean (x̄) = 2.4 Sample standard…

Q: Who wins by majority rules? ... Number of Votes 12 14 10 8 1st Rank 2nd Rank 3rd Rank 4th Rank BBM…

A: We need to find, which candidate wins the election  by Borda count and Majority rule.