In a study on life satisfaction in urban and rural areas of a province, 453 people in the urban area and 345 people in the rural area were randomly selected and the subjects were asked whether they were satisfied with their lives. 92 people in urban areas and 56 people in rural areas stated that they were not satisfied with their lives. Which of the following is the point estimate of the difference in the ratios of those who are satisfied with their lives in the urban and rural areas of this province?    a) 0.02  B) 0.18  NS) -0.04  D) -0.18  TO) 0.04

Q: According to CDC, among men aged 20-39 obesity is 40.5%--? = 0.405.   You take repeated samples of…

A: Given The data is as follows: n=650

Q: It is assumed that a production process may produce some defective items. It is found that 12 items…

A: It is given that, the number of defectives out of 100 is 12.

Q: 55. For the following data obtain (i) mean, (ii) median, (iii) mean deviation from median, and ()…

A:

Q: The symbol μˆpμp^ represents the proportion of a sample of size n. True False

A:

Q: The bad debt ratio for a financial institution is defined to be the dollar value of loans defaulted…

A: (a-1)From the information, given the hypotheses are,That is, there is no evidence to conclude that…

Q: Country Number of Deaths United States Australia Canada 35,490 1363 2296 Denmark 258 Finland 272…

A: Hi, we are supposed to answer three subparts at a time. So, I am answering the first three subparts.…

Q: The personnel director of the Target Corporation wants to estimate the number of employees within…

A: Given that  Sample size n =80 Favorable cases x =4 Sample proportion p^=x/n  =4/80 =0.05

Q: A survey of 2310 adults in a certain large country aged 18 and older conducted by a reputable…

A: Given information- We have given that in a survey of 2310 adults in a certain large country aged 18…

Q: The mean monthly starting salary for 12 randomly sampled business school graduates is Php35400. If…

A: The mean or average of a sample is computed by dividing the sum of observations by the total number…

Q: A researcher wants to test the difference in the mean scores of two independent groups on a…

A: To determine if there is a significant difference in the mean scores of the two groups, the…

Q: A restaurant chain would like to measure the proportion of customers who are generally satisfied…

A: During a 1-week period, 147 customers were surveyed and 93% of them reported as being either…

Q: One of the most feared predators is the great white shark, which can grow to a mean length of 21…

A: Given, population mean (µ)  = 21 sample size (n) = 3

Q: And a pool, 102 of 1020 randomly selected adults age 18 or older stated that they believe there is…

A:

Q: According to a study, 1145 out of 1295 college graduates in the Philippines are employed. At a 0.05…

A: Solution:- from given information claim: proportion of employed college graduates in the Philippines…

Q: 4. The bad debt ratio for a financial institution is defined to be the dollar value of loans…

A: The single mean t-test is used to compare the mean of a variable in a sample of data to a…

Q: Q) In a factory of plates, the mean weight of 13 plates was found to be 45. After inspection, it was…

A:

Q: ) A doctor wishes to estimate the mean triglyceride level of patients two hours after eating a steak…

A:

Q: X is uniformly distributed on the interval (3, 15). What is the probability that X is at least 5?

A:

Q: A company manufacturers batteries in batches of 29 and there is a 3% rate of defects.  Find the mean…

A:

Q: A technology committee wants to perform a test to see if the mean amount of time students are…

A: Here we have to compute the Test statistic Wr have given the following data X :…

Q: When there is no difference between two groups, then the value of hazard ratio is 0. True False

A: False.The risk of an event occurring between two groups at any given time is compared using the…

Q: According to study conducted in Turkey in 2018, data collected by observers at randomly selected…

A:

Q: 3. A researcher wants to estimate the average academic performance in Mathematics of grade 10-…

A: We have given that  Sample size n =7 I want to find mean and variance.  Mean = sum of all…

Q: 16. Hout, Duncan, and Sobel (1987) reported on the relative sexual satisfaction of heterosexual…

A: Solution: In the given example  the relative sexual satisfaction of the wife and the husband are…

Q: ged? In on, 18% 2012, a school chelor's ached?

A: See hand written solution ,

Q: Let x be a random variable that represents the pH of arterial plasma (i.e., acidity of the blood).…

A: Computation of test statistic value: The population standard deviation is unknown. Thus, in order to…

Q: a.     What statistical test will you use to test this data ?   b.     State the null and…

A: From provided information it is claimed that, women’s movement has resulted in an increase in the…

Q: The highway department wants to estimate the proportion of vehicles on a Toll road at KM 25 between…

A: Sample proportion is given by    p = x/n Here x is the number of 18 wheelers vehicles And n is the…

Q: 8. A researcher is interested in knowing whether the proportion of childless couples in a community…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: 1) A teacher gives and exam with a mean of 82 and an SD of 8. a) what proportion did scored an A? b)…

A: Question 1)The mean of the distribution is .The standard deviation of the distribution is The score…

Q: In 2001, the Gallup poll found that 81% of American adults believed that there was a conspiracy in…

A: Given that, x=634,n=1039 The sample proportion is,

Q: Consumer Reports rated automobile insurance companies and gave annual premiums for top-rated…

A:

Q: A survey of 120 fatal accidents showed that in 24 cases the driver at fault was inadequately…

A: Point estimate:   The population parameter which is estimated by using sample statistic is termed as…