A study is conducted by the UMP management to identify the satisfaction level of UMP students with the quality of food served at the university cafeterias. Data from a sample of 150 randomly selected students reveals that only 38% of them are satisfied with the food quality. ii) How large should the sample be if we wish to be 98% confident that the error in estimating the proportion of students who are satisfied is less than 0.1?

Q: In December 2004, 43% of students in high school were satisfied with the lunches supplied through…

A: Given that p=0.43n=1046x=397

Q: The American Community Survey is administered by the US Census Bureau annually. Two different random…

A: The variable under the study is: Income (in thousands) for two samples A and B. The boxplot is as…

Q: The admisnistrators of Rowan university wants to know more about the knowledge of students regarding…

A: Given information Sample size(n) = 35 Sample mean = 58 Standard error = 3.2 Significance level (α) =…

Q: A recent poll randomly sampled 100 unemployed and 950 employed Canadians and asked them about their…

A: Assume that p1 and p2 are the true population proportions of employed and unemployed Canadians, who…

Q: The following figure shows the results from a study linking BMI to pasta intake by weight categories…

A: A scatterplot is given and interpretation of the scatter plot is required for the variables BMI and…

Q: A researcher wanted to examine the effect of a new math study skills program on second graders.…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: . Does this suggest that there is a difference in the effects of the two methods in terms of…

A: An obstetrician wanted to know the effectiveness of two methods of relieving pain in women due for…

Q: A researcher believes that among the type A blood, 10% have type B blood a residents and finds that…

A: Given, A researcher believes that among the residents of a remote community, 30% have type O blood,…

Q: the sample size is 30 for each group, there are 3 groups, and the mean score for football players is…

A: Mean square between: The between group variation is how much variation it is due to the interaction…

Q: The time married men with children spend on child care averages 6.1 hours per week (Time, March 12,…

A: The hypotheses can be constructed as: H0: µ = 6.1 H1: µ ≠ 6.1 Sample size (n) = 40 Assume level of…

Q: ompetitor’s brands (Brand B and Brand C). You have set up a laboratory test of the three types of…

A: Null Hypothesis: H0: There is no difference in the mean distance driven before the tread length of…

Q: A researcher believes that among the residents of a remote community, 10% have type O blood, 10%…

A:

Q: According to researchers, the mean length of imprisonment for motor-vehicle-theft offenders in a…

A: Givensample size(n)=100Mean(x)=15.9standard deviation(σ)=5.0significance level = 5%

Q: The World Bank Group suggests that a minimum of 6 GB of internet data per month per user is needed…

A:

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

A: From the provided information, Sample size (n) = 54 Out of which 35 involved an intoxicated driver.…

Q: An academic medical center surveyed all of its patients in 2002 to assess their satisfaction with…

A: Population mean = 84.5 Sample mean = 89.2 Sample standard deviation = 17.4 n = 125 Level of…

Q: uppose a researcher is interested in evaluating the effectiveness of a new teaching method on…

A: x1 =135x2 = 160 s1 =10s2 = 5 n1 = 25 = n2

Q: 3. Researchers conducted a study of smartphone use among adults. A cell phone company claimed that…

A: Given Information: Male: Sample size (n1) = 1343 Sample proportion (p^1) = 10% = 0.10 Female: Sample…

Q: The psychologist can be 95% confident that the interval from to includes the unknown population mean…

A: Given: n=250, M=2.0, s=4.2 The estimated standard error is given by, sM=sn=4.2250=0.2656 Hence, the…

Q: Generate two set of data of at least with ten data points using any scenario of your choice, Using…

A: The data is: Data Set 1 Data Set 2 0.319691 0.721655 0.134176 0.430515 0.900752 0.225351…

Q: 3) In 2005, 21% of Americans reported that they smoked cigarettes. In a recent study to see if the…

A:

Q: A service station owner believes that equal numbers of customers prefer to buy gasoline on every day…

A: It is needed to test the whether the number of customers who prefers to buy gasoline on each day of…

Q: A researcher believes that among the residents of a remote community, 30% have type O blood, 50%…

A: Given Sample size, n=80 Type O blood = 30% Type A blood = 50% Type B blood = 10% Type AB blood = 10%…

Q: The admisnistrators of Rowan university wants to know more about the knowledge of students regarding…

A: State the given values. Now, we know that

Q: Sample Question Female Physicians The percentage of physicians who are women is 27.9%. In a survey…

A: Given : Population proportion = p = 0.279 Number of physicians selected = 44 total number of…

Q: A poll of 547 adult Americans employed full or part time asked, “Generally speaking, would you say…

A: Solution: a. From the given information, p-hat = 0.12 and n=547. The sample proportion is an…

Q: Reports show that 92% of online searches in March 2021 use Google as the search engine. A network…

A: Given: p=0.92 p^ = 758800=0.9475 α = 0.05 to test the hypothesis of proportion of searches that use…

Q: Amy has two ways to travel from her home in Norco to her office in Los Angeles. One is to go via the…

A: The random variable travel time follows normal distribution. There are two independent samples which…

Q: The leader of two postpartum women’s support groups is interested in the depression levels of the…

A: Provided information is, the leader of two postpartum women’s support groups is interested in the…

Q: A substance abuse counselor wants to demonstrate the effect of situational stress on alcohol…

A: Introduction: Denote μ1, μ2 as the true mean measures of alcohol rating, as given by the group of…

Q: Suppose that you were interested in investigating the effect of a drug that is to be used in the…

A: Paired test:A paired test or a dependent test statistical test that compares the averages or means…

Q: (a) What is an estimate of the proportion of calls not resulting in a satisfactory outcome for the…

A: Given, A proportion of the calls not resulting in a satisfactory outcome for the customer.…