4. A researcher claims that the percentage of infants who receive immunizations is less than 80%. She selects a sample of size 750 infants and 573 have received immunizations. c. Compute the P-value based on your test statistic.

Q: 35. In a large sample, which is the bigger concern?

A: HERE GIVEN, SAMPLE SIZE IS TOO LARGE

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: (a) The proportions are 22.2% for males and 18.7% for females, The margin of error is 3%, and…

Q: 2. A company claims that 90% of its deliveries arrive on time. You take a sample of 74 deliveries,…

A:

Q: In a sample of 550 students, 80% prefer online resources versus printed materials. The standard…

A:

Q: 1.if the population of ABM students of malaya integrated High School has a mean of 12.45, what is…

A:

Q: In a survey of 399 randomly selected households conducted in the U.S., it was found that 158 of the…

A: Given, The objective is to find the best point estimate of the proportion of households that have…

Q: In a study to estimate the proportion of smokers among the residents in a certain city and its…

A: To testH0:p1=p2H1:p1≠p2

Q: 4. Eighty-five percent of Americans favor spending government money to develop alternative sources…

A: Given problem Given that   Eighty-five percent of Americans favour spending government money to…

Q: which statistic is equivalent to dividing the sum of scores equally across all members of a sample

A: The statistic measures the characteristics of samples to estimate the population.

Q: As the sample size increases, what happens to the p-value associated with a given sample mean?

A: In statistics, the sample size is the no of units present in a sample that is drawn from a…

Q: 5. How is the sampling distribution of the statistic x displayed?

A: We have to show how the sampling distribution of chi square displayed.

Q: d. Glamour Magazine obtains sample data from readers who decide to mail in questionnaire printed in…

A: Introduction: It is required to identify the type of sampling used.

Q: Test the claim that the proportion of men who own cats is larger than 50% at the .025 significance…

A: Given that  Claim :  The proportion of men who owns cats is larger than 50%  Hypothesized proportion…

Q: 9. At a 1% level of significance, does college academic grade depend on the high school SAT result…

A: Given:   SAT   Acad. Grade Low Average High Total Low 13 25 21 59 Average 18 31 38 87…

Q: Suppose that you are attempting to estimate the weight of 600 parts. In order to use the infinite…

A:

Q: how importan

A: The five steps to sampling are: Identify the population. Specify a sampling frame. Specify a…

Q: 8. An educational research group wishes to estimate the proportion of all California community…

A:

Q: In how many ways can a statistician select a sample of 15 people from a population of 90 people?

A: Given,A statistician select a sample of 15 people from a population of 90 people.

Q: In order manufacturer is claiming that its new 2021 SUV model will have better gas mileage than the…

A: (a) The null and alternative hypothesis is, H0:u=30H1:u>30              (right tailed/one tailed)…

Q: If a manufacturer conducted a survey among randomly selected target market households and wanted to…

A: From the provided information, Margin of error (E) = 6% that is 0.06 Confidence level = 95% The…

Q: 3. A Gallup poll conducted in 2010 found that 494 of 1050 adult Americans believe it is the…

A: Given that  Sample size n =1050 Favorable cases x =494 Sample proportion p^=x/n  =494/1050 =0.4705

Q: intended population

A: A population is the entire group that you want to draw conclusions about   Intended population:…

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A: From the provided information, Sample size (n) =750 and p0 = 0.54

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A:

Q: Are freshmen psychology majors more likely to change their major before they graduate compared to…

A: Given Information :   344 of the 618 freshmen psychology majors from a recent study changed their…

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: The single proportion  binomial test is used to compare a proportion of responses or values in a…

Q: Twenty years ago, 56% of parents of children in high school felt it was a serious problem that high…

A: Using the given data fill the blanks

Q: Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the 20th, 25th,…

A: 1. arrange the data.  2. to Find kth percentile, index = k100×n 3. Now,  Case 1. If the index…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: To estimate the male proportion P1 = 0.223 and female proportion P2 = 0.198 Margin of Error E = 0.02…

Q: 1. How many samples must be considered from a population of 28,000 students, if 5% margin of error…

A:

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: Percentage of level of confidence is 95%. Here, margin of error is, E=0.03.

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The value of p0 is 0.52 and the sample size n is 800.

Q: An automotive manufacturer wants to know the proportion of new car buyers who pref foreign cars over…

A: A sample of 897 cars; n=897 304 preferred domestic cars; x=304 α=0.05

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A: Given n=850 P0=0.54 so n*P0(1-P0) = 850*0.54*(1-0.54) =211.1

Q: 2. For Americans using library services, the American Library Association claims that at most 70% of…

A: Given: The random sample of patrons selected are n=100. The number of patrons who borrowed books are…

Q: Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the 18th, 23rd,…

A: Given

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A:

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: From the provided information, Population proportion (p0) = 0.57 Sample size (n) = 700 and x = 244

Q: What is the p-value for a sample of  100 undergraduate students with a sample mean credit card…

A:

Q: Assuming a sample size of 76, what is the 90th percentile for the AVERAGE teacher’s salary?

A: From the above question The given values are  n = 76 The calculate 90 th  percentile So the formula…

Q: The manager of a small supermarket chain wants to estimate the proportion of time stockclerks spend…

A: Assume that the population proportion is 0.5. It is known that the critical value for 98% confidence…

Q: What is the sample size (n=) and what consequences will the sample size have on my analysis and…

A: Sample size: A sample size is a subset of the desired population. It is a part of the population. It…

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: Denote p as the true proportion of parents, who think that high school students were not being…

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A: 10.2.21-T

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: Given: Hypothesized population proportion(p0)=0.52Number of parents in survey(n)=800Total parents…

Q: Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the 21st, 26th,…

A: Given that   Observations are  27 , 25 , 20 , 15 , 30 , 34 , 28 , 25. Formula for Percentiles is…

Q: Suppose an advertising company wants to determine the current percentage of customers who read print…

A: Given dataError = 5% = 0.05Confidence level = 0.98Significance level = α=1-0.98=0.02

Q: suppose you select a simple random sample of 75 douglas college student and you find that 8 are left…

A: It is given that the sample size n is 75 and x is 8.

Q: A researcher deciding to increase the desired sample size from n = 25 to n = 100 prior to collecting…

A: Given that: A researcher wants to Increase the size of the sample from n =25 to n=100 prior of the…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: