1. (a) With the aid of examples, discuss any three reasons why scholars like you undertake  quantitative research. (b) To test the hypothesis that eating fish makes one smarter, a random sample of 12  MPA/MIRD students take a fish oil supplement for one year and then are given an IQ test.  Below are the results: 116 111 101 120 99 94 106 115 107 101 110 92 Test  using  the  following  hypothesis,  report  the  test  statistic  with  p-value,  then  summarise  your conclusion. Ho: p = 100  Hi: p > 100

Q: The mean age of bus drivers in Chicago is 59.2 years. If a hypothesis test is performed, how should…

A: Given : Claim : The mean age of bus drivers in Chicago is 59.2 years.

Q: According to Pew Research, 68% of a random sample of 2,524 adults said that the government should…

A: Answer - According to a Pew Research, 68% of a random sample of 2524 adults said              that…

Q: In a study of 420,093 cell phone users, 10 common belief that such cancers are affer mervous system…

A: Given sample size and sample proportion we use one same z proportion .

Q: statements about t-tests is incorrect? Select one:

A:

Q: O 1. The null hypothesis states that in the general population there is no change, no difference, or…

A: Null hypothesis: The hypothesis which is usually a no difference or neutral attitude is called the…

Q: A study was conducted on biometric facial recognition. A face recognition app was known to correctly…

A: We have given that p = 94% = 0.94 n = 300

Q: Ho: p = 0.71 H₁:p 0.71

A: The hypothesis is H0: p=0.71 H1: p≠0.71

Q: Provide an example (other than one discussed in the text) of a random variable that does not arise…

A: In this case, we need write the example of a random variable that does not arise from a quantitative…

Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: Followings are the explanation of the question Use the one sample Z proportion test The following…

Q: You obtain the following two samples of data. Sample #1 Sample #2 89.5 80.8 76.4 84.5 111.2 93.5…

A: A left tailed test for two means is performed while one mean is lesser than the other mean. A left…

Q: The better-selling candies are often high in calories. Assume that the following data show the…

A: M&M'sKit katMilky way II210205200220215218250235202240245190210230180

Q: Part C: A couple of friends read the results reported by these companies and decide to do their own…

A: Given that Sample size (n)=18 Number of people agree for online dating (X)=14 We have to conduct z…

Q: Suppose we are testing the hypothesis that occurrence of four types of viruses (A, B, C, D) is…

A: Answer: From the given data, Number of rows (r) = 4 which are A, B, C and D Number of columns (c) =…

Q: A study reports that 75 percent of young adults in a county get their news from online sources. A…

A: One proportion z test:   One proportion z test is used for comparing the observed population…

Q: Gender analysis: Is there a statistically significant difference between the genders?  Use Excel’s…

A: As per guidelines we will only answer the first three subparts, please repost other subparts for…

Q: There are 7360 tigers worldwide and the state of Texas has approximately 3861 tigers in captivity.…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: Nine students took a standardized test. Their scores are listed below. Later on, they took a test…

A: The wilcoxon signed ranks test, checks the median difference between two paired groups. If the…

Q: It is claimed that the proportion of OSU students who belong to a fraternity or a sorority is 0.15.…

A: P value will claculated by using z table

Q: Q9 Answer TRUE or FALSE for the statements below: The Pearson correlation coefficient (r) measures…

A: Here we have to identify whether the given statement is True or False

Q: You have survey data collected from a sample of students at UWL. You see from the sample that…

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Q: Find the χ2 test statistic and the P-value. (Round each number to 4 decimal places.) χ2 =  P-value…

A: The claim for the test to check whether there is difference between the opinions of men and women or…

Q: A preliminary study regarding the number of AIDS cases reported for Santa Clara County, California…

A: From given data we have : so, n=48

Q: Experiment refers to a categorical quantity under examination in an experiment as a possible cause…

A: Analysis of variance is a parametric test that is used to understand the relationship between the…

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

A: Given: Sample size (n) = 20 Number of students with blood cholesterol level of at least 200 (x) = 6

Q: The data summarized in the accompanying table is from a paper. Suppose that the data resulted from…

A: Given that We have to find a..Chi square test b..Check calculations  c..Two proportion test…

Q: If the Chi-square (x2) test statistic = 16, what decision would you make about your hypotheses? (…

A: The number of rows is 2 and the number of columns is 2.

Q: an example of a discrete quantitative ent grade point average e spent preparing for SAT

A: A variable can be used to characterize a individual quantitative or qualitative characteristics.…

Q: It is tested by a statistical test.   a. Null hypothesis b. Alternative hypothesis c. Test statistic…

A: Given that

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A: a) This is a purposive study as Researchers use purposive sampling when they want to access a…

Q: A data set includes weights (in grams) of 32 Reese's Peanut Butter Cup Miniatures. The accompanying…

A: Given information- We have given the data set of weights (in grams) of 32 Reese's Peanut Butter Cup…

Q: USING YOUR MATH CWIHW Michael is thinking about how old professional tennis players are. He is…

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Q: The table below shows results from a recent General Social Survey on two variables, respondent sex…

A: Null hypothesis: Null hypothesis is the statement about parameter of population. Alternative…

Q: The accompanying table shows the numbers of male and female students in a particular country who…

A: Solution: The table of number of male and female students in a particular country who received…

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

A: IQ data from four randomly-selected students from each of the three schools is provided.    Null…

Q: Do men and women have similar college majors? Researchers ask a group of college students about…

A: From the provided information, The chi square test statistic is 16.0 and the chi square critical…

Q: Use the Kruskal-Wallis test to determine whether there is a significant difference among the three…

A: Program A B C 510 450 600 400 510 620 490 400 580 520 430 490 490 480 590 630 360 640…

Q: At the a Y 0.05 significance level, what is the most appropriate conclusion to draw from this test?

A: To make decisions about hypothesis, we make comparison of p-value and level of significance.

Q: 3. a) b) The mean IQ of 200 patients in a psychiatric hospital is 91, with a variance of 16, and the…

A: Mean=91 Variance=16 Standard deviations=4

Q: A study conducted among college students looked at the influence of religiosity (high, medium, or…

A: Given The data is as follows:   High Medium Low Never 214 129 60 Sometimes 145 61 55 Often…

Q: Data on the weights (Ib) of the contents of cans of diet soda versus the contents of cans of the…

A: Given