Answer only the 2 questions

Q: The following table contains information on the amount of time spent each day (on average) on social…

A: (a) Obtain the 98% confidence interval for slope B The 98% confidence interval for slope B is…

Q: Find the length of a 99% confidence interval for the mean of the sample with a standard deviation of…

A: We have given that the 99% confidence interval for the mean of the sample with a standard deviation…

Q: Determine , and o, from the given parameters of the population and the sample size. Round the answer…

A: Given that  Sample size n =22 Population mean =42 Population standard deviation =9

Q: Describe the sampling distribution of p. Round to three decimal places when necessary. N= 19,000, n=…

A: Given that  Population size ( N) = 19000 Sample size ( n) = 350 P = 0.8 By using binomial…

Q: D. Yes, because o is equal to s w 8. What will be the effect on the t distri A. The t-distribution…

A: (8)  We have given that,  What will be the effect on the t- distribution curve when we replace σ by…

Q: Answer d) and e) only: The College Board reports that the scores on the math SAT were normally…

A: d) It is assumed that, µ is the true population mean of math SAT scores in school for all students.

Q: The area of the interval lies between z = -2.49 and z= 1.72 is

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Q: Examine the graph below. There is a crossover on the 4th day. Which Simple Moving Average is the…

A: A simple moving average is a statistical technique that smooths out the fluctuations in prices by…

Q: find 20. Given u = 88, x= 90 s = 2, and n = 15. What will be the population variance in this example…

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Q: Suppose a data set from a bike share company contains the number of daily bike rentals at each of 6…

A: Given i=1,…,23 and j=1,…,6 Find  Write down a metaethical normal model that can be

Q: Let X be a continuous random variable symmetric about Y. Let Z = 1 if X>Y OR Z = 0 if X <= Y. Find…

A: Given: Z=1 if X&gt;Y OR Z=0 if X&lt;=Y

Q: D. when it is only 1% of the total population 4. In Student's t-distribution, what is the sample…

A: Given that  What is the difference between t distribution and normal distribution :

Q: Stress at work: In a poll conducted by the General Social Survey, 81% of respondents said that their…

A: The provided information is  p=0.80 n=200 µ=np=0.81*200=162 σ=np(1-p)=200*0.81*0.19σ=5.548 a.…

Q: The players of Maluleke FC are from two main towns of Limpopo province, Tzaneen and  Polokwane. From…

A: Given,no.of players from Tzaneen=20no.of players from Polokwane=8Total no.of players=28

Q: A psychologist is studying the relationship between self-esteem scores (X) and job satisfaction…

A: By using the regression equation to solve this problem  Ycap = a + b ×  X

Q: The only grades possible in a history course are A, B, C,D,F. The probability that a student will…

A: Introduction: The possible grades in a history course are A, B, C, D, and F.

Q: Given the binomial experiment with n=300 trials anf probability of success on a single trial p=0.03…

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Q: lecture(11.14): A professor offered a course that was offered half online and half in person. The…

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Q: 1) The following data show the test scores of six individuals on a standardized test before and…

A: Using the wilcoxin signed rank test , we need to test to determine whether or not the seminar has…

Q: A certain drug is used to treat asthma. In a clinical trial of the drug, 24 of 281 treated subjects…

A: Given that  Sample size n =281 Favorable cases x =24 Sample proportion p^=x/n  =24/281 =0.0854

Q: population of a certain LGBTQ+ community consists of six (6) measurements: 2,3,6,9,11 and 5. How…

A: Here Given  Measurements 2,3,6,9,11,5

Q: The value of k for a random sample of size 18 for a normal distribution such that P(-2 <t< k) =…

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Q: i. Find the value of p from the table above.  ii. Calculate the probability that at X is at least 5.…

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Q: Construct the indicated confidence interval for the population mean u using the t-distribution.…

A: Sample mean = 14.8 S = 2.0 n = 6 C = 0.99 By using one sample mean confidence interval formula we…

Q: c) The players of Maluleke FC are from two main towns of Limpopo province, Tzaneen and Polokwane.…

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Q: A bottled water company has found in the past that 2% of their bottled water does not meet the…

A: The random variable bottled water does not meet the company’s high standards follows binomial…

Q: What is the probability that it takes at most 26 minutes total to produce a randomly selected part?…

A: It is a problem of normal distribution. Given, three random variables X1, X2, X3 have mean values…

Q: Given are the two sets of data on geometry first quarter test scores of two sections in grade 10:]…

A: Mean is the measure of central tendency. It is calculated by adding all the observation divided by…

Q: ctivities CHALLENGE 6.2.1: Confidence intervals for population means. ACTIVITY…

A: Given data  67, 71, 71, 70, 73, 65, 68 and 73 N = 8 Population std deviation = 6

Q: I want to assess whether or not students produce more stress hormones (cortisol) after watching…

A: Given: Sr. No. Action Movie Horror Movie d 1 10 12 -2 2 15 18 -3 3 16 17 -1 4 20 21 -1…

Q: Baby weights: The weight of male babies less than 2 months old in the United States is normally…

A: Given,mean(μ)=11.4standard deviation(σ)=2.9

Q: Lifetimes of Wristwatches A random sample of the lifetimes of 30 inexpensive wristwatches has a…

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Q: If he serves 15 times, what is the probability that he gets exactly 9 first serves in

A: Here use binomial distribution

Q: b) The probability density function of random variable X is given as: f(x) = {* |– Bx if 0 <x < 1…

A: Given that  We have to find value of A and B :

Q: An automatic machine in a manufacturing process is operating properly if the lengths of an important…

A: We have given that Mean(µ) = 108Standard deviations (σ) = 5.5X ~ N (µ, σ )= N (108,5.5)

Q: T 4- E Determine whether the table represents a discrete probability distribution. Explain why or…

A: A discrete random variable is a variable whose values can be obtained by counting. Though, the…

Q: Chapter 06, Section 6.2, Intelligent Tutoring Problem 023 Now, if the mean is 27 and the standard…

A: Let X be the random variable from normal distribution with mean (μ) = 27 and standard deviation (σ)…

Q: The amount of time that a drive-through bank teller spends on a costumer is a random variable with a…

A: Let X be the random variable from normal distribution with mean (μ) = 3.2, standard deviation (σ) =…

Q: A random sample of professional wrestlers was obtained and the annual salary (in dollars) for each…

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Q: In 1940 the average size of a U.S. farm was 174 acres. Let's say that the standard deviation was 54…

A: Given that  Mean=174 Standard deviation=54 Sample size=37 Note: According to bartleby experts…

Q: The following are a few simple properties of the gamma function (a) I (n) = (n – 1)(n – 2) …·…

A: a. Γ(n)=(n-1)Γ(n-1) Γ(n)=(n-1)(n-2)Γ(n-2)Γ(n)=(n-1)(n-2)(n-3).......(1)Γ(1)Hence proved. b.…

Q: A sample of college students was asked how much they spent monthly on cell phone plans. Approximate…

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Q: Find the critical value z, necessary to form a confidence interval at the level of confidence shown…

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Q: no handwriting please.A manufacturer of a samsung phone charges claims that only 4% of his…

A: Given  Population proportion=p=4%, n=sample size=120, level of significance=1%,

Q: Consider the simple random sample of vehicle speeds below. Use the data to construct 3 different…

A: Sample size (n) = 50Sample mean (x̅) = 63Standard deviations (s) = 10 degree of freedom (df) = n -1…

Q: Identify the relation in the table. In your response, please be sure to label the relation as (a)…

A: Regression equations are used largely in forecasting.

Q: 1. The table below give the output for 6 years of an experimental farm that used each of 4 fertili…

A: Let 'µ1' be the population mean of Fertilizer 1 Let 'µ2' be the population mean of Fertilizer 2 Let…

Q: From the following data compute the price index for 1998 on the basis of 1995 prices. Units of price…

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Q: what is its distribution, its mean and its variance?

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Q: 8 T 0. * 1 2 3 4 P(x) 0.06 0.15 0.45 0.21 0.13 Send data to Excel Part 1 of 3 (a) Find the…

A: Given: