A group of randomly selected members of Mothers' Club were asked how many kids they have. The table Dl shows the results of the survey. There are 120 members in Mothers' Club. Number of kids Number of mothers 1 6. 2 6. 3+ Based on the data, what is the most reasonable estimate for the number of Mothers' Club members who have fewer than 2 kids?

Q: A health psychologist wanted to test if discussing the health disparities of a patient with their…

A: given information :n=20      µ=40 ,σ=70,α=0.05 x_bar=56.7 hypothesis define: H0.u=40H1: μ not equal…

Q: A random sample of 800 Tennessee residents is taken.  Of those 800 residents, 170 said their…

A: Given that total size of the sample= 800 Of those 800 residents, 170 said their favorite college…

Q: Using a random sample of 3800 TV households, a media research company found that 50.3% watched the…

A:

Q: Students at Neilson Middle School are asked if they prefer watching television or listening to the…

A: Given that, The total number of students at Neilson Middle School is 150. The number of students,…

Q: The mean of a sample is 40. What will the mean become if a) 9 points are added to each score? b) 18…

A:

Q: find the mean for the number of correct answers

A: A multiple choice test with 17 questions, each question has four possible answers, one of which is…

Q: A health psychologist wanted to test if discussing the health disparities of a patient with their…

A: As we are authorized to answer only 3 subparts for each question and that you haven't specified…

Q: Newborn babies are more likely to be boys than girls. A random sample found 13,573 boys were born…

A: The claim of the test is there is sample evidence that the birth of boys is more common than the…

Q: A random sample of 324 residents of a community revealed that 30% were very satisfied withthe…

A: Given that, Critical values: By using the standard normal table of Z, the critical value for two…

Q: A pollster wishes to estimate the number of left-handed scientists. How large a sample isneeded in…

A:

Q: A research report from an independent-measures study states that there are significant differences…

A: Given information- We have given a report from an independent- measures study. F(3, 48) = 2.95, p…

Q: What is the mean for the combined set if both of the original samples have n = 4 scores? What is the…

A: Given that For sample 1, mean M1 = 8 For sample 2, mean M2 = 16

Q: In 2007, the CDC reported that approximately 6.6 per 1000 (0.66%) children were affected with autism…

A:

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96, p=0.54 and E=0.02.

Q: How many success in the sample? How many failures in the sample? ? What size sample does the…

A: Answer:-  Given, n=1800

Q: A data set is described as consisting of n = 15 scores. Based on the notation being used, the data…

A: We have the following statement .

Q: An opaque jar contains 300 marbles, all either green or purple. Calista pulls out 10 marbles without…

A: # Given: no of marble in jar N=300  Sample of size n=10 drawn  No of purple marble in sample =2…

Q: A random sample of 800 Tennessee residents is taken.  Of those 800 residents, 170 said their…

A: Given information  Total residents(n) = 800 No of people whose UK team is favourite  (x) = 170 point…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: Given , Sample size = n = 54 Number of intoxicated driver = x = 35 Sample proportion = p^ = 3554 =…

Q: An article reports that in a sample of 124 nurses, 51 said that a busy workload had a positive…

A:

Q: 3. Suppose that you randomly picked 100 iPhones and calculated the average battery life for these…

A: The objective is to guess the average battery life of 100 iPhones.

Q: on a multiple choice test with 20 questions, each question has 4 possible answers, one of which is…

A: We have to find mean  for students who guess at all  correct answers..

Q: At Sundae King, 6 of the last 10 sundaes sold had nuts. Considering this data, how many of the next…

A: We have to find correct answer

Q: . An introductory stats professor hypothesizes that 50% of students learn best by watching the…

A: Test is that whether distribution of students is such that 50% of students learn best by watching…

Q: What is the point estimate of the true proportion of people in the population who are over 6 feet…

A: Given that, Sample of 50 peoples is to be drawn and out of which 14 are possessing  characteristic…

Q: A group of researchers want to investigate the academic performance of the college students in…

A: Given that, N = 12000 Margin of error (e) = 0.05 The formula for calculating the sample size is,

Q: A sample consists of n = 16 scores. How many of the scores are used to calculate the range?

A:

Q: A historian examining British colonial records for the Gold Coast in Africa suspects that the death…

A: The proportion of African that died is p1=x1n1=24534002=0.007205459 The proportion of Europeans that…

Q: What is the 87.7 percentile of X~N(12,3)

A: Answer: Given that, X~N(12,3)

Q: Only about 10% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: Here use single proportion z test Only about 10% of all people can wiggle their ears. Is this…

Q: A research report from an independent-measures study states that there are significant differences…

A: The degrees of freedoms are 2 and 36.

Q: When taking a 17 question multiple choice test, where each question has five possible answers, it…

A:

Q: If the p-value of a test is 0.022. what is your decision?

A: For making conclusion about null hypothesis Ho we compare p-value and level of significance.

Q: A newspaper provided a  "snapshot" illustrating poll results from 1910 professionals who interview…

A: Introduction:The 100 (1 – α) % confidence interval for the population proportion, p is: (p̂ –…

Q: A poll is conducted and shows that 46% of homes have a landline, with a margin of error of 3%. a.…

A: Given that a poll is conducted and shows that 46% of homes have a landline with a margin of error of…

Q: How large a sample is needed

A: Given :  Margin of error=E=3%=0.03 Significance level=α=0.01 The critical value is ,…

Q: What would be the mean of the proportion of homeowners in this sample who prefer a finished…

A: The sampling distribution of p-hat (sample proportion) is approximately normal with mean p and…

Q: A population with a mean of 8 has a sum of 40. How many scores are in the population?

A:

Q: health psychologist wanted to test if discussing the health disparities of a patient with their…

A: Here it is given that- Population mean (μ) = 40 Population standard deviation (σ) = 70 Total number…

Q: In a random sample of 100 voters, 52 said they planned on voting for the Republican presidential…

A: Identify the value of the sample proportion. The value of the sample proportion is determined below:…

Q: If a person’s z score equals 1.61, what percentage of the observations are more extreme?

A:

Q: mple is rder to be 99% confident that the sample proportion will not differ from the true proportion…

A: Given : Margin of error: ME = 0.06 sample proportion: p̂ = 0.23

Q: if the 90% Ci for the population mean is (-4.58, 6.54) what is the sample mean O a. can't be found

A: Given data,Lower limit =-4.58Upper limit =6.54Sample mean =?

Q: According to the Humane Society, 33% of households in the United States own at least one cat. You…

A: From the given information p Value is 0.092. We want to interpret it.

Q: A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had one or more…

A:

Q: Using a random sample of 4300 TV households, a media research company found that 62.2% watched the…

A: n = 7100

Q: A historian examining British colonial records for the Gold Coast in Africa suspects that the death…

A: The number of samples extracted from the population is the sample size. When the sample size 30 or…

Q: Five years ago 54% of American families owned stocks or stock funds.the Investment Company Institute…

A:

Q: On a multiple choice test with 9 questions, each question has four possible answers, one of which is…

A: It is given that there are 9 questions and each question having four possible, one of which is…

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.