An economist claims that the population standard deviation of the monthly income of all the families that belong to the poverty level is Php 2, 500.00. A group of researchers surveyed 250 families that belong to the poverty level and obtained a mean monthly income of Php 3, 500.00. Assume that the monthly income of the families is approximately normally distributed. Find the length of the confidence interval with confidence level of 99%. O a. 50 O b. 51.5 O c. 39.2 O d. 32.7

Q: View Policies Show Attempt History Current Attempt in Progress Your answer is incorrect. Try again.…

A: Let X be the random variable from normal distribution with mean (μ) = 5.0 inches and standard…

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

A: There are two dependent samples which are action movie and horror movie. We have to test whether…

Q: Illustration 23. Splice the 2nd Index to the 1st Index from the following data and show the revised…

A:

Q: 2.2% 2.2% 34.1% 34.1% 0.1% 0.1% 13.6% 13.6% H-30 µ-20 µ-lo µ+lo µ+2o µ+3ơ known that the mean is 70…

A: Given Imean is 70 and  standard deviation is 10. There are 35 students in the class.

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: Gasoline Use A random sample of 36 drivers used on average 749 gallons of gasoline per year. If the…

A:

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: onducting a nypotnesis test, the null nypothesIS Is that ti hypothesis is that the slope of this…

A: Given data: sample size (n)  = 10 SSxx  = 98 SSE  = The standard deviation of errors = 2.979…

Q: According to the graph below, what is y when x is 4? 1. 3   6   4   5

A: Given that : A scatter plot is given here by using the information from graph we solve this problem.…

Q: Let X(1) 0. a) Show that X4) and X(6) – X() are independent for any s>r. b) Find the distribution of…

A:

Q: How many permutations are there of the letters in the word "TENNESSEE"?

A: In word "TENNESSEE", Number of E's = 4 Number of N's = 2 Number of S's = 2 Number of T = 1 Total…

Q: The distribution of cholesterol levels in teenage boys is approximately normal with mean of 170 and…

A:

Q: The following table gives information on the amount of sugar (in grams) and the calorie count in one…

A: (a)   Determine the value of standard error.   The value of the standard error is obtained below…

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A:

Q: (a-1) If Price = 1, what is the prediction for Sales? (Round your answer to 1 decimal place.)   (b)…

A: We have given that the fitted regression line is Sales = 842 - 37.5*Price

Q: 3.In a study, 924 of the 1200 surveyed individuals said that they are worried a great deal to…

A:

Q: The President of the Farmers Association wants to know how the amount of fertilizer and theamount of…

A: The independent variables are water and fertilizer. The dependent variable is growth. We have to…

Q: Consider a regression study involving a dependent variable y, a quanttative independent variabe nd s…

A:

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

A: Given information: The number of players from Tzaneen is 20. The number of players from Polokwane is…

Q: The estimated prevalence is 18%, and the desired confidence level is 91% with a margin of error of…

A:

Q: Consider the following probability density distribution of random variable X. if 0<x<6 f(x) = }kx +…

A: To find the value of k we will use the fact that the integral of pdf f(x) over whole range of x is…

Q: The following table lists the ages (in years) and the prices (in thousands of dollars) for a sample…

A:

Q: Let p be the population proportion for the following condition. Find the point estimates for p and…

A: It is given that Sample size n = 1008 Number of adults who were not confident that the food they eat…

Q: A manufacturer of Samsung phone charges claims that only 4% of his production is defective. In a…

A: 1. Given claim: The percentage of production is defective is 4%. Null Hypothesis: H0:p=0.04…

Q: 1. 1. A. Determine the percentage and number of samples for each stratum using proportional…

A: Question1(Part B and C) Given Information:     Size of the Population (N)=200Size of the sample n=40

Q: Question 1 For the following give: • Description of the correlation (negative or positive). • The…

A:

Q: Suppose an admissions office determines that 40% of students who are accepted actually enroll in its…

A: Given that  Sample size n =800 Population proportion p=40%=0.40

Q: The area of the interval lies between z =-0.82 and z = -0.42 is | 0

A: area under normal curve represented by proabability

Q: Below, n is the sample size, p is the population proportion and p is the sample proportion. Use the…

A: The random variable X follows binomial distribution. We have to find the probability that sample…

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: exp (-(a0 . - 260 + c) what is its distribution, its mean and its variance?

A:

Q: 5. Given the data Y, = 10, Y, = 9, and Y = 9.5, we wish to fit an IMA(1,1) model without a constant…

A: solution:- (a) when mc = 1 so p is equal to the 1 and the price elasticity of demand is = 1…

Q: Document H - China's GDP between 1952 and 2005 People's Republic of China's Nominal Gross Domestic…

A: Studying graphs is vital to statistics.

Q: Three judges, A, B, C, give the following ranks. Find which pair of judges has common upproach A: 1…

A: Here we calculate three rank correlation coefficient: r12 between the ranks of judges I and II r23…

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 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: Appendix A Statistical Tables a. What is the probability that 336 or more companies outsourced some…

A:

Q: c) The probability density function of random variable X is given as: if 0< x < 2 f(x) = if 2 < x <…

A: Given that

Q: D. When the sample size is sufficiently large. 7. In the estimation of a parameter using the…

A: We have given that the statements about to the t-distribution. Here, need to find the correct choice…

Q: - (30) [This combines problems 7.17 and 7.20 in the textbook.] Each year, Forbes magazine publishes…

A: The population is given by, 74,57,43,38,38,31 Therefore the population mean is given by, µ =…

Q: The average production of all the machine in a fabrication is 15 finished materials in one hour with…

A:

Q: Create an additional column, D, using as difference D = 2019 scores – 2009 scores. Find the mean,…

A: Hi! Thank you for the question, as per the honor code, we are allowed to answer three sub-parts at 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: An airplane is built to be able to fly on one engine. If the plane has two engines operate…

A: Given Hello. Since your question has multiple, we will solve first question for you. If you want…

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

A:

Q: deviation of $6,200. We randomly survey ten teachers from that district. O Part (a) In words, define…

A: Mean μ=41000, standard deviations σ=6200, n=10 Note: According to Bartleby guidelines expert solve…

Q: urve that lies to the left of (a) Z = - 0.45, (b) Z = 0.38, (c) Z = 0.83, and (d) Z= 1.37. mal curve…

A: According to guidelines we solve only first question when the given questions are different.

Q: i. What is the probability of getting the first "three" in the 6th roll? ii. How many times would…

A: here given , balanced 6 sided die rolled  so there are total possible outcomes are 6 here…

Q: Suppose an admissions office determines that 40% of students who are accepted actually enroll in its…

A: It is given that n=800 and p=0.40.

Q: What is the probability that the second unreliable computer will be found on the fifth computer?…

A: