In order to estimate the average electric usage per month, a sample of 100 houses was selected, and the electric usage was determined. Assume a population standard deviation of 470-kilowatt hours. If the sample mean is 1,863 KWH, the 95% confidence interval estimate of the population mean is (1784.98, 1941.02) (1818.35, 1907.65) (1770.88, 1955.12) (1769.752, 1956.248) (1785.685, 1940.315)

Q: The data show the distance (in miles) from an airport of a sample of 22 inbound and outbound…

A: Given data : N = 22 {…

Q: Let X be a random variable with the following CDF: Fx(x)= What is the mean of X ? O & LINGIN 0 + +…

A: Given,  CDF is:We have to find E(X)

Q: (b) Afly 0220 (Round to four decimal places as needed.). (c) Using the results of part (b), if 5000…

A: It is given asP( shorter than 19.84 or longer than 20.16 ) = 0.0220

Q: (d) Draw a graph of the discrete probability distribution for the random variable X. Describe the…

A: The given data indicates the number of credit cards currently used by respondents of the survey.

Q: Explain why did you use the type of decomposition model and interpret the components in the…

A: Any data varying over time is considered as a time series data. Any time series can be primarily…

Q: Sarah was calculating the speeds (mph) of vehicles travelling down Maple Street on two separate days…

A: By the given data ,we have

Q: A A data set represents the wait time (in minutes) for a random sample of 100 visitors to Disney's…

A: First let us enter the given data in Excel by arranging the data in ascending order. Here n=40

Q: king distances (in feet) when stopping on a dry surface are shown in the conclude that there is a…

A: n=6, α=0.05

Q: an advertising campaign, a snack company claimed that every 18-ounce bag of its cookies contained at…

A: To find the mean and standard deviation for the sample data

Q: The data in the table to the right are based on the results of a survey comparing the commute time…

A: From the information given that

Q: Mean weight

A: XFrequency12004140021600318001

Q: urvey was conducted two years ago asking college students their top motivations for using a credit…

A:

Q: According to a sociological report from 2015 US adults got an average of 7.2 hours of sleep per…

A: The following solution is provided below :

Q: A high school biology class conducted genetics experiments with randomly selected fruit flies, and…

A: Let X be the characteristic of genetics with X1, X2, X3, X4 be the red eye/normal, sepia eye/normal,…

Q: You wish to test the following claim (Ha) at a significance level of a = 0.02. Ho: p=0.51 Ha:p> 0.51…

A:

Q: A phone service provider hypothesizes that Android users have a lower credit score rating than…

A: It is given that:Android Users Credit ScoresiPhone Users Credit…

Q: You wish to test the following claim (Ha) at a significance level of a = 0.01. Ho: P₁ = P2 Ho: P₁ >…

A: Given:The null and alternate hypotheses arefirst populationnumber of success (x1) = 359Number of…

Q: The following tables provides before and after performance results on a history quiz. In between, a…

A: Before lesson quiz resultsAfter lesson quiz results6101116611711141571581511178969

Q: White noise having a two-sided spectral density of 5 V2/Hz is applied to th input of a finite-time…

A: In this problem, we are dealing with a system that consists of a finite-time integrator with a…

Q: Find the P-value for the indicated hypothesis test with the given standardized test statistic, z.…

A: Test is two tailed testTest statistic(z)=-2.44significance level()=0.07

Q: For each of the following combinations of sample size and sample proportion, indicate whether the…

A: The confidence interval for sample proportion is given as:The required condition to find the sample…

Q: McDonalds claims that their Big Mac contains 563 calories. A researcher believes that McDonalds is…

A: The sample calories in a Big Mac are given as normally distributed.The sample size is The objective…

Q: In a previous year, 56% of females aged 15 and older lived alone. A sociologist tests whether this…

A: Given ,n = 350X = 202P = 56% = 0.56 = 0.01Using formula,,

Q: Michael went to the driving range with his range finder and hit 75 golf balls with his pitching…

A: Step 1: Install and load necessary packages (if not already installed). Step 2: Input the data into…

Q: Q2.1 Conditions for Confidence Interval The mutation identified in a clinical setting as producing…

A: The no. of sampled people, i.e., the sample size, n=300.The no. of sampled people, who have the…

Q: 4. a. The owner of a small factory that produces work gloves is concerned about the high cost of air…

A: yx37723771327836753381357739683476

Q: For a recent year, the following are the numbers of homicides that occurred each month in a city.…

A: The given…

Q: Two cards are selected from a standard deck of 52 playing cards. The first card is not replaced…

A: Without replacement

Q: The accompanying data represent the homework scores for material on Polynomial and Rational…

A: given college algebra homework scores data is…

Q: Independent random samples of the heights of adult males living in two countries yielded the…

A: The question is about hypothesis testingGiven :Randomly selected no. of adult males from country 1 (…

Q: A survey across generations of workers gathered data on engagement at work. The results for a sample…

A:

Q: or the following pairs, indicate which do not comply with the rules for setting up hypotheses, and…

A: Here, we have given some null and alternate hypothesis . Then, we have to find which pair is not…

Q: The data below represent commute times (in minutes) and scores on a well-being survey. Complete…

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

Q: e money raised and spent (both in millions of dollars) by all congressional campaigns for 8 recent…

A:

Q: Explain which would result in a wider large-sample confidence interval for p: a sample size of n =…

A: A sample size of n = 100 or n = 400 is given, we need to explain which would result in a wider…

Q: 3: In a 1868 paper, German physician Carl Wunderlich reported based on over a million body…

A: Given the data of the body temperatures from a random sample of healthy adults asThe population…

Q: Identify the sampling techniques used, and discuss potential sources of bias (if any). Explain.…

A: The following solution is provided below

Q: The accompanying table shows eleven altitudes (in thousands of feet) and the speeds of sound (in…

A: By the given data,use R - software, we get as output:a) the correct scatter plot is option ● D.b)…

Q: LaToya is auditioning ensemble cast members for her new production. She needs the dancers to jump as…

A: LaToya is auditioning ensemble cast members for her new production. She needs the dancers to jump as…

Q: 1. Let x = 40, 8=0.07 and assume mortality follows DeMoivre's Law with a maximum age of 120.…

A: Given, mortality follows DeMoivre's Law with a maximum age of 120Age, force of interest,

Q: Last week, Sarah had exams in math and in Spanish. On the math exam, the mean was u = 30 with a = 5,…

A: Math exam:Mean Standard deviation Sarah had a score of Spanish exam:Mean Standard deviation Sarah…

Q: Consider a randomized control trial with four observations, of which two units were randomly…

A: iDiYi118202304416

Q: Find the mean of the following probability distribution? z P(z) 0 0.1224 1 0.1978 0.2515 0.2902 4…

A: XP(X)00.122410.197820.251530.290240.1381

Q: Let Q = ln(3 + |Q1| + 2|Q2|). Then T = 5 sin2(100Q) satisfies:— (A) 0 ≤ T < 1. — (B) 1 ≤ T < 2. —…

A: GievnTo find the confidence interval for the sample proportion ,we will first calculate the sample…

Q: The alternative hypothesis, significance level, and summary statistics are provided. Conduct the…

A: From the provided information,The hypothesis H1: p1 - p2 &lt; 0

Q: Question 2: The following data are from matched samples based on the citations for speeding by…

A: The question is about hypothesis testing.Given :No. of months ( n ) = 5To find :Test that the…

Q: Following is the cost information for Camp Rainbow's operations last summer: Number of Cost to Run…

A: WeekNumber of campersCost to run…

Q: Calculate the correlation coefficient r, letting Row 1 represent the x-values and Row 2 the…

A: The table provided in the question is as follows:-Row 110203244606172Row 2153173151185190109165

Q: Consider an auto insurance portfolio where the number of accidents follows a Poisson distribution…

A: Yes, . has Poisson distribution and  has exponential distribution.

Q: Let S be a r.v. such that S = X₁+...+XN, and corresponds to the known insurance e2-1 model of the…

A: 6) To find the distribution of each individual random variable Xi, we need to find the corresponding…