what is test statistics round to 2dp pvalue round to 4dp conclusion at alpha= 0.05

Q: Does the hypothesistesting involve: 1) mean or proportion, 2) large or small sample size, and 3)…

A: Given Information- Sample mean, x-bar = 502 Population mean, μ = 453 Standard deviation, σ = 95…

Q: After a sample of n = 25 high school students took a special training course, their SAT scores…

A: a. Let μD be the population mean difference, the test is that the training course has a significant…

Q: Men and women in Malaysia continue to differ in election turnout rate for party BB. Is there a…

A: We want to test Is there a significant difference between the proportion of men and the proportion…

Q: What is the p-value for a two-tailed test with z=2.04? (Use 4 decimal places) I plugged in z = 2.04…

A: Given two tailed test with Z = 2.04. and level of significance = 0.05.In two tail test the p value…

Q: The U.S. Bureau of Labor Statistics reports that 11.3% of U.S. workers belong to unions (BLS…

A: Given Information Hypothesized proportion p = 0.113 n = 400 x = 52 Sample proportion is given by

Q: A criminologist was interested in whether there was any disparity in sentencing. She selected at…

A: Excel: Data --> Data analysis -->t-Test: Two-Sample Assuming Unequal Variances

Q: A cigarette manufacturer sent each of two laboratories presumably identical samples of tobacco. Each…

A: Solution-: Given: n1=5,n2=5,α=0.05 (A) We identify the hypothesis and interpret the result. (B)…

Q: Is there a larger proportion of days with precipitation in Dublin Ireland than New York City?  In…

A: Solution: Let p1 be the proportion of days with precipitation in Dublin and p2 be the proportion of…

Q: 3. ABC hospital with branches in lloilo City and in Bacolod City has developed an improved process…

A: Let  μ1 be the average waiting time lliolo city  μ2 be the average waiting time Bacolod city  Note:…

Q: Consider the mean grade point average, suppose we take a random sample of n 25 students majoring in…

A: Given Sample size , n= 25 significance level at 0.05 We are conducting two tailed hypothesis testing…

Q: the proportion of wildfires caused by humans in the south different from the proportion of wildfires…

A: We have given that  Sample sizes n1= 519 ,n2= 500 Favorable cases x1= 350   , x2= 383

Q: A) Test the claim using a hypothesis test. B) Construct an appropriate confidence interval.

A: For sample 1, we have that the sample size is N1=1655N_1= 1655, the number of favorable cases is…

Q: to evaluate the effect of a treatment, a sample is obtained from a population (mean=20), after…

A: One-Sample T-Test Assumptions. The assumptions of the one-sample t-test are: 1. The data are…

Q: A study was made of 425 children who were hospitalized as a result of motor vehicle crashes. Among…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Only 17% of registered voters voted in the last election. Will voter participation decline for the…

A:

Q: 8 A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it…

A: Solution

Q: A pharmaceutical manufacturer has come up with a new drug intended to provide greater headache…

A: The hypotheses are given below: The claim is that new formula is better than old. Null hypothesis:…

Q: Identify the test statistic: (round to two decimal places)

A: The pooled proportion is, p¯=n1p^1+n2p^2n1+n2=223×0.57+223×0.05223+223=138.26446=0.31 The pooled…

Q: + The advertised claim for batteries for cell phones is set at 48 operating hours with proper…

A: The hypothesized proportion is 0.002.

Q: A researcher has observed 500 vehicles at a stop in a suburban neighborhood and recorded the type of…

A:

Q: The advertised claim for batteries for cell phones is set at 48 operating hours with proper charging…

A: Solution: Given information: n= 5000 sample size of batteries  x = 15 batteries fail during the…

Q: Suppose that you've collected gpa data for a simple random sample (SRS) of Business majors (Group…

A: The null and alternate hypothesis for ANOVA are Now, it says that we have rejected the null…

Q: 13. Are post hoc tests necessary following a significant ANOVA testing one independent variable with…

A: Note : Since you have asked multiple questions, we will solve the first question for you. If you…

Q: What is the p-value of a left-tailed one-mean hypothesis test, with a test statistic of z0=−1.19?…

A: From the given information, the test statistic value is -1.19 and one-mean hypothesis test is…

Q: Identify the null hypothesis, alternative hypothesis, test statistic, critical value(s), P-value…

A: p1 = 0.021 p2 = 0.012   n1=1655n2 = 1652

Q: It is of interest to determine if there is a significant difference in population mean IQ among…

A: Hypotheses: Null hypothesis: There is no difference in population mean IQ among students from three…

Q: Does the hypothesistesting involve: 1) mean or proportion, 2) large or small sample size, and 3)…

A:

Q: A doctor wants to compare the average price between two different brands of sanitizer during the…

A: Given claim: The average price of Brand A is higher than Brand B Null hypothesis:  H0: µ1≤µ2.…

Q: A new treatment for a severe allergy is claimed to have a better cure rate than the standard of…

A: One prop Z test is applicable

Q: 3. ABC hospital with branches in lloilo City and in Bacolod City has developed an improved process…

A:

Q: One company's bottles of grapefruit juice are filled by a machine that is set to dispense an average…

A: Given that the company's bottles of grapefruit juice are filled by a machine that is set to dispense…

Q: A research organization tested microwave ovens. Assuming the 3 populations are all normal with the…

A: For the given situation, Null Hypothesis: H0: There is no significance difference in the average…

Q: A coin was tossed 400 times and the head turned up 216 times. Test the unbiased at 5% level of…

A: Here AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION ONLY PLZ REPOST FOR REMAINING  here use…

Q: In a simple random sample of 26 small business owners, 25 said that hiring college graduates makes…

A: The value of p^ is obtained below: p^=2526=0.9615 Hypothesis: The null and alternate hypotheses…

Q: random sample of soldiers who fought in Ahe Battle of Preston, 774 soldiers were from the New Model…

A: Given that, Sample size of soldiers n=1000 Sample proportion of soldiers who are from Royalist army…

Q: A survey was conducted to investigate the relationship between gender (male and females) and sector…

A: According to the given information  The critical value at 5% significance level is for one degree of…

Q: + The advertised claim for batteries for cell phones is set at 48 operating hours with proper…

A: Given that Sampke size n = 5000 Number of batteries stopped working befor 49 hours, X = 15 Level of…

Q: Usually, major league baseball games have averaged 3 h in duration. However, because games in Denver…

A:

Q: Suppose you an analyzing a large ANOVA test that yielded a F-statistic of 7.89 and a MSE of 249.97.…

A: Given: F-statistic =7.89 MSE=249.97

Q: Perform a test of hypothesis at 5% level of significance to help the labour union leader make an…

A: Here population standard deviation unknown so use t-test

Q: It has been claimed that over 30 percent of entering college students have blood cholesterol levels…

A: First, we obtain 20 random numbers between 1 and 57 using the function "RANDBETWEEN()" function in…

Q: The advertised claim for batteries for cell phones is set at 48 operating hours with proper charging…

A: We have given that  Sample size n =5000 Favorable cases x =15 Sample proportion p^=x/n

Q: Justify the choice of test procedure. b) Can a student's t-test on paired samples be used as a test…

A: Test is that whether the quality of life of patients before and after the treatment is same. Given…

Q: What is the p-value of a right-tailed one-mean hypothesis test, with a test statistic of z0=1.6? (Do…

A: Given - Right-tailed test Test Statistic = z = 1.6

Q: In an article that appears on the website of the American Statistical Asso- ciation…

A: (a) The probability of a random test resulting in dirty, is given by, PTD=PC·PTDC+PD·PTDD Substitute…

Q: Could please help interpret this SPSS output of a Independent sample t-test?

A: Independent samples t-test is an inferential statistical procedure.

Q: Is College Worth It? In the New York Times article “College Graduates Fare Well in Jobs Market, Even…

A: There is always some contention about the value of a parameter or the relationship between…

Q: An experiment was conducted to test if 2 new anti-anxiety medications will have an effect on number…

A: Identify the option that is correct for the given statement.   The correct option is identified…

Q: A survey by the National Institutes of Health asked a random sample of young adults (aged 19 to 25…

A: The cell contributes most to the chi-square test statistic is males who currently live in their…