Answer the next 2 questions using the following information. The US Department of Energy reported that 51.7% of homes were heated by natural gas. A random sample of 221 homes in Kentucky found that 115 were heated by natural gas.  Calculate the p-value.

Q: According to past reports 51% of employees own a car. In a random sample of 106 employees, how many…

A: Total no.of employees(n)= 106 The percentage of employees own a car(p)= 0.51

Q: n a class of 25pupil's their are 8individual who played in the hockey team.what percentage of class…

A: Given : Total no. of individual in a class (N) = 25 No. of individual who played in the hockey team…

Q: Nationally, 80 percent of adults own an thermometer. You are interested in whether the same…

A: We have given that  Sample size n = 100 Sample proportion p^=75%=0.75 Population proportion…

Q: Imagine a researcher wants to determine whether parents differ from each other in their fondness for…

A: Explanation:   It is given that research asks each parent of 50 couples, It means, there are 50…

Q: Use this information to construct the margin of error needed to put together a 98% confidence…

A: Sample size = 65 Sample mean = 10.35 Population SD = 3.25 And at 98% confidence level, the critical…

Q: n choose the appropriate test and name the​ population(s). A researcher asks a random sample of 200…

A: When the variable of interest is categorical in nature, it indicates that we are dealing with the…

Q: A recent survey of 537 California college students found that 481 had taken an online class in the…

A:

Q: n Internet poll asked 4272 U.S. adults about their use of smart watches and fitness trackers. A…

A: Given:

Q: In a survey 500 adults were interviewed, 150 said they had early medical checkup. Find the 95% for…

A: Givensample size(n)=500No.of adults said they had early medical checkup(x)=150p^=xn=150500=0.30

Q: Suppose a sample of 158158 tankers is drawn. Of these ships, 135135 did not have spills. Using the…

A: It is given that, among 158 tankers 135 did not have spills.

Q: The percentage of girls who like pink in a school is 57%. Which proportion separates the lowest 10%…

A: The percentage of girls who like pink in a school is 57%.p = proportion = 57/100 = 0.57 The sampling…

Q: According to past reports 48% of employees own a car. In a random sample of 250 employees, how many…

A: Total no.of employees=250 The percentage of employees own a car=0.48

Q: A sample has SS= 20 and s? = 4. How many scores are in the sample?

A: Six scores are in the sample.

Q: Many athletes (and their parents) worry about the risk of concussions when playing sports. A…

A: First let us sort the head circumferences (in inches) for the players on the team; No. Head…

Q: A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly…

A:

Q: quality conscious disc manufacturer wishes to know the fraction of disks his company makes which are…

A: Given Sample size =865 X=112

Q: A Pew Internet poll asked 4272 U.S. adults about their use of smart watches and fitness trackers. A…

A: Given that  Total Number of adults about their use of smart watches and fitness trackers n = 4272…

Q: condition. Find the lower cutoff score (number of berries which will go for juice).

A: The z score can be calculated as: z=x-μσ The required z score that is associated with the bottom…

Q: Please answer the questions in the photo and explain. Thank you

A: (a) Sample Mean = (2.2 +0.5 +2.4 +2.7 +2 +1.5 +0.2 +1.5 +0.1 +0.2)/10 = 1.33 (b) Here, we're…

Q: f) Let z be the value of the test statistic. Give the correct decision rule at a = 0.05 level of…

A: sample size, n = 120 30 learners reported that they smoke Proportion of learners who reported that…

Q: recent study reported that 12% of people toss away about half of what they buy at the grocery store.…

A: From the given information we conduct Z test for proportion.

Q: Report the proportion of the 370 students based on mobile phone brands as a percentage. Apple  269…

A: The percentage of a category can be calculated by dividing the frequency of the category by the…

Q: The owner of a local bar specializing in alternative music wanted to determine the average age of…

A: t 95% confidence level, the z value is 1.96 which can be obtained by using the standard normal…

Q: Exhibit-C. An insurance company selected samples of clients under 18 years of age and over 18 and…

A: It is given that: "Under age of 18" group:n1 sample size=500x1 No. of accidents=180"Over age of 18"…

Q: A pharmaceutical company conducts a study where 50 patients are given a drug. They find that 10…

A: Sample is the subset of the population.

Q: Gender Yes Girls 537 328 Вoys 532 234 Conduct a test of hypothesis to determine if the two…

A: Given that the total sample of size N=1096 teenage surveyed. The data about the teenagers that uses…

Q: If a coin is flipped 150 times and the number of Hs is 25. Compute the proportion of Hs. Round to…

A: We have given that,  Favorable cases (X) = 25 and sample size (n) = 150 Then,  We will find the…

Q: Determine whether the sample is biased or unbiased

A: Given a situation, we need to find whether it is biased or unbiased.

Q: Jennifer wants to estimate the percentage of parents that use cloth diapers. She asks a randomly…

A: Solution: It is given that Jennifer wants to estimate the percentage of parents that use cloth…

Q: a. What value should we expect for our sample proportion?

A: Let p be the population proportion of high school seniors who have a driver's license.Given that,

Q: A sample has SS= 20 and s2 =4. How many scores are in the sample?

A:

Q: The test scores of 10 randomly selected students are listed below. Find the median. 30 35 43 44 47…

A:

Q: A quality-conscious disk manufacturer wishes to knoww the fraction of disks his company makes which…

A: Given, The no. of sample, n =5431 The number of defective, x = 4943

Q: Find the first and third quartiles for a week's temperatures from last year's summer, expressed in…

A:

Q: d. The degrees of freedom = e. The test-statistic for this data = (Please show your answer to three…

A: d. Degrees of freedom: df=number of categories-1   =4-1   =3

Q: We would like to determine the average height of the overall student body at Michigan State…

A: Yes, It is necessary to take a sample from the overall student body.

Q: An undergraduate advisor thinks that 12% of all students who took a particular Intro Stats course…

A: From the provided information, An undergraduate advisor thinks that 12% of all students who took a…

Q: A claim is made that 85% of college students own a smartphone. Natalie believes that a larger…

A: Let p be the population proportion  p=0.85, x= 135, n=150  p^=x/n

Q: i need 20 to be 30 for the sample section

A: The mean is 1.8 and the standard deviation is 0.5.

Q: A report shows that 32% of citizens want to move out of theirneighborhood. An alderman wants to test…

A: The objective of the question is to identify the appropriate statistical test to determine if the…

Q: 15. Fifty-two volunteers participated in an experiment to investigate the effect of noise on…

A: The given experiment has no control group. Hence, it is clear that the control group and…

Q: The arm span and foot length were measured (in centimeters) for each of the 19 students in a…

A: The objective is to find out the predicted foot length for a student with an arm span of 160cm.

Q: Suppose that 19% of all athletes in a sport use a banned drug. A test is available that detects 88%…

A:

Q: John works as a weld inspector in a shipyard. Because he keeps track of good and poor welds, he…

A: It is given that  p = 5% = 0.05 Sample size, n = 300 Z = (p^ - p)/√(p(1-p)/n) 0.012583057392118

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.