A researcher carried out a study to find out the association between HIV and cervical cancer.  The results are shown on the table            HIV Status   Cervical cancer Positive Negative Total Positive 24 10 ? Negative 24 35 ? Total 46 45 ?   Fill in the blanks                    Develop a null hypothesis and an alternative hypothesis for this study                                                                (8 marks) Use chi-square to test your hypothesis: use = 0.01                  Why was chi-square test used for the study?

Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…

A: The given sample size is 25, mean difference is 1.6 and SS is 150.

Q: What are the null and alternative hypotheses? Calcium is essential to tree growth. In 1990, the…

A: The data shows the calcium for tree growth of 8 precipitation dates in 2018.

Q: Would you favor spending more federal tax money on the arts? Of a random sample of n1 = 218 women,…

A:

Q: In a previous year, 61% of females aged 15 and older lived alone. A sociologist tests whether this…

A: We have to find test statistics and p value...

Q: Please help with part F which I got wrong answers: P-value of the sample statistic rounded to 4…

A: Note:  As per the students requirement solving part(f). From the available information, Sample…

Q: Mathew determines that the “power” for detecting a posttest score of the size Mathew expects with…

A: Power: The probability of rejecting the null hypothesis, assuming that the null hypothesis is false.…

Q: A presidential of staff's club hired a public relations firm to conduct a poll to see whether he…

A:

Q: What is the P VALUE? H(0) P= .68 H(A) P> .68 Sample size of 46.  63 People were surveyed. 48…

A: Answer is in steps given below. Thanks!

Q: dents at the university spend 10 or more hours reading weekly. Run a Z test and state the p value.…

A: The following null and alternative hypotheses need to be tested: H0​:μ​=10 Ha​:μ​>​10​ This…

Q: Using the results r(128) = –.64, p > .05, what is the most appropriate conclusion? A. r is not…

A: It is given that:The value of correlation coefficient between X and Y for 128 observations: The…

Q: Dr. Y collected data on local people’s viewpoints about the building of the 2020 Olympic venue in…

A: Solution : Given : Local people’s viewpoints about the building of the 2020 Olympic venue in Tokyo,…

Q: You are doing a Z-test and get a Standardized Test Statistic (STS) of Z = - 2.3. %3D Round answers…

A: From the provided information, The value of the test statistic (Z) = -2.3

Q: Conduct the proper test to determine whether a cold medicine improves symptoms (lower scores…

A: Given data: Placebo Medicine 7 5 8 8 6 3 9 6 11 10 10 4 6 7 9 4

Q: Below is a table that a sample of 100 people from a school and what type of car they drive and if…

A: From the given information,   Foreign Domestic Total Student 15 35 50 Staff 25 25 50 Total…

Q: Magnetic surveying is one technique used by archaeologists to determine anomalies arising from…

A: Consider r be a random variable which follows binomial distribution here indicates the number of…

Q: K Claim: Most adults would erase all of their personal information online if they could. A software…

A: Given Information: Claim: Most adults would erase all their personal information online if they…

Q: A reporter has claimed that the majority of Colleges in the United States are Private For-Profit…

A:

Q: has the proportion of adults who totaly abstain from alcohol changed? what is the zo= what is the p…

A: Given : x1= 440.0 n1= 1100 x2= 374.0 n2= 1100 significance level, 0.05

Q: Does training in stress reduction make a difference for student success?  15 students received…

A: Given Information: Sample 1: Sample size n1=15 Sample mean M1=88 Sum of squares SS1=400 Sample 2:…

Q: Conduct a hypothesis testing for the results of the correlation between the writing skills and…

A: The concept of testing hypothesis is one of the method of statistical inference where we take the…

Q: You are doing a Z-test and get a Standardized Test Statistic (STS) of Z = 0.7. Round answers to 4…

A: (a)   Obtain the P-value at Z=0.7 for the right tailed test.   Use Excel to obtain the probability…

Q: A newspaper article says that on the average, college freshman spend 7.5 hours a week going to…

A: Suppose a random sample of n units is to be taken from N units in the population. To use a box…

Q: random sample of 20 young men was taken. One half of the group was given coffee containing caffeine…

A: Given n1=12 n2=8 S1-SQUARE=31.11 S2-square=28.67

Q: Confounding occurs in an experiment when you are not able to distinguish among the effects of…

A: Correct option is True

Q: If a researcher were to increase a sample size from n = 30 participants to n = 80 participants, what…

A: Increase power

Q: Researchers look at the role of music on anxiety.  They believe the type of music will make a…

A: Solution:  Given information: n1=14 Sample size of classical music groupn2=14  sample size of Tecno…

Q: that the mean score of these 53 students is 147.9. Is this significantly different from the national…

A: Given: Sample size, n = 53 Mean,  Population mean,  standard deviation,

Q: Show complete solutions and round off your answers up to 4 decimal places. A prospective study on…

A: Based on the 2 x 2 matrix provided in the question, Risk difference, Relative Risk and Odd ratio is…

Q: A negative z score indicates that an individual's raw score:

A: Introduction: Consider X as a normally distributed random variable, with mean μ and standard…

Q: Amount of reading Above average Average Below average Total Glasses? Yes No 47 26 48 31 126 78 70…

A: The total number of observations is .The observed frequency is shown below:GlassesAmount of…

Q: Magnetic surveying is one technique used by archaeologists to determine anomalies arising from…

A: Let,   X: magnetic susceptibility reading for a randomly chosen site at an archaeological research…

Q: Doctors nationally believe that 78% of certain type of operation are successful in a particular…

A:

Q: A question of medical interest is whether jogging leads to a reduction in blood pressure. To learn…

A:

Q: A researcher decides prior to her study that she will set the α value at .05. She measures two…

A: α=0.05, r=-0.31, p=0.24

Q: On average, they report 6.6 hours a week going to parties, and the sample SD (or SD+) is 9 hours.…

A: Let  be the population mean number of hours a week going to parties.Given that,Population mean…

Q: In the regression of average passing yards per game (YPG) on NFL quarterback salary in millions…

A: The regression equation is

Q: hypothesis test is being performed to test if there is any difference in pain relief using Tramydol…

A:

Q: In this question, you are asked to use the t-test A newspaper article says that on the average,…

A: It is required to fill the blanks regarding a box model, and perform a t-test.

Q: Whats the formula for converting a z score to t score?

A: What is the formula for converting a z score to t score?

Q: For a sample of n=16 scores, how many scores are used to calculate the sample variance?

A:

Q: What does the P-value represent

A: The P-value is the probability of getting test results as extreme as possible as observed results,…

Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…

A:

Q: In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the…

A: Solution: Let X be the hippocampal volume. From the given information, x-bar = 8.09, s = 0.7 and n =…