The contingency table shows the result of a random sample of students by  Lika Salmanyan at PCC and the number of hours they spend investing on Robinhood and Acorns by age and gender. At alpha =0.05, can you conclude that age is related to gender when it comes to time spent investing on Robinhood and Acorns.   Gender 16-20yrs 21-30yrs 31-40yrs 41-50yrs 51-60yrs 61yrs or older Male 45 170 90 72 45 26 Female 9 30 21 17 10 5 What are the degrees of freedom? What is the critical value? Leave your answers in 3 decimal places The degrees of freedom is and the P- value is .

Q: Question Dr. King is concerned that STA 2381 students aren't studying enough. There are 7 sections…

A: A variable is a characteristic that is being measured.

Q: A student wondered what proportion of a large jar of thousands of marbles were red and speculated…

A: From the provided information, The population proportion (p) = 0.30 Sample size (n) = 50, out of…

Q: Natasha is a physician looking to determine whether a supplement is effective in helping men lose…

A: Test statistic results:For testing whether a supplement is effective in helping men lose weight or…

Q: Researchers conducted a study to find out if there is a difference in the use of online-learning by…

A: The claim is that there is a difference in the use of online learning by different age groups.

Q: In a large clinical trial, 392,323 children were randomly assigned to two groups. The treatment…

A: Solution

Q: An alloy manufacturer is investigating if they can improve the strength of one of their alloysby…

A: The objective of this question is to determine whether the strength of an alloy can be improved by…

Q: Suppose that we identify 155 women 50 to 54 years of age who have both a mother and a sister with a…

A: The hypotheses for the test are given below. Null hypothesis: H0: p = 0.08 Alternative hypothesis:…

Q: Alexis surveys a random sample of 80 students at his school and finds that 22 of themusually walk to…

A: We can find the answer as below

Q: In a CBS News survey done in 2006, 88% of n = 348 randomly sampled married men said that they would…

A: Given that  Sample sizes n1=348 , n2=584 Sample proportion p1^=0.88 , p2^=0.84

Q: A physician wants to determine if a supplement is effective in helping men lose weight. She takes a…

A: It is given that the sample size (n) is 6 and the hypothesized test is left- tailed. The level of…

Q: A consumer agency wants to determine whether there is a major difference between the proportions of…

A: Introduction: Denote p1, p2 as the true population proportions of cars of model and model 2,…

Q: 59% of all the towns residents own a dog and 69% own a cat. Of the dog owners 43% also own a cat. If…

A: Given 59% of all the towns residents own a dog and 69% own a cat. Of the dog owners 43% also own a…

Q: Suppose a certain virus (sorry!) affects 0.3% of the population. A test used to detect the virus is…

A: 0.3% of 100000 population have virus.  0.3*100000/100= 300  people have virus.  88% have virus and…

Q: find the relative risk for hypertension in females 50+ years versus females <50 years of age. (keep…

A: Now complete table from given information    Developed Hypertension  not develop Hypertension…

Q: If the odds of catching the flu among individuals who take vitamin C is 0.0342 and the odds of…

A: The odds of catching the flu among individuals who take vitamin C is 0.0342. The odds of catching…

Q: Reviewing the sample of offspring of "highly irradiated" male radiologists 27 were female and 40…

A: There are 27 females and 40 males.

Q: Can a person train to become better at holding their breath? An experiment was designed to find out.…

A:

Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…

A: The probability is the chance of occurrence of any observation can involve in the sample with equal…

Q: A researcher is given a sample with variables (x, y) where x represents the number of points a…

A: Coefficient of determination: Coefficient of determination is denoted with r2 and it explains that…

Q: A business magazine mailed a questionnaire to the treasurers of all of the Top 400 most profitable…

A: A ‘population’ is defined as a set or collection of all the individual persons, objects, events, and…

Q: (c) Compute the test value. Round the intermediate calculations to at least three decimal places and…

A: Let p1 denotes the proportion of men with high blood pressure and p2 denotes the proportion of men…

Q: is it possible that 70 of all students are below average

A: The class averages in both sections and for both professors are above 70, meaning that at least 50%…

Q: A random semple of n,144 people ages 16 to 19 werre takn from the land ef Oah, Ha, ndwere found to…

A: Note: Hi there! Thank you for posting the question. To avoid the plagiarism issue we have issued the…

Q: Suppose that in a survey of 1,000 U.S. residents, 721 residents believed that the amount of violent…

A: From the provided information, Number of residents = 1000 721 residents believed that the amount of…

Q: We want to know if students with bronchitis at 5 years have more cough symptoms when they grow up.…

A: Answer:-  Number of students with cough symptoms at a age 12 with Bronchitis at age 5 =32 out of 290…

Q: Night Owls - A MSU psychologist reports that 40% of MSU students regularly sleep less than 8 hours…

A: Given that:  population proportion(p)=0.40 x=77 n=215

Q: Suppose you are conducting a paired t test to determine whether or not caffeine has an effect on…

A: d = B- A

Q: Suppose that the proportion of high blood cholesterol level of U.S. children is known to be 0.78.…

A: Given  : Researchers have postulated that, due to differences in diet, Japanese children have a…