what is the test statistics and p-value? b) Find a 90% confidence interval for the difference in the proportion of males and females who use their phone during class c) Interpret the conclusion and interval

Q: According to a survey of 5041 Star Trek fans conducted in 2010, 2873 are females. Use this data to…

A: Null Hypothesis: H0: p<=0.5 Alternative Hypothesis: H1:p>0.5 Given that x=2873 and n=5041…

Q: Consider a drug testing company that provides a test for marijuana usage. Among 315 tested​…

A:

Q: A graduate student believes that people consider faces with more contrast between eye color and skin…

A: Explanation for the first part: Given a null hypothesis H0, we either conclude that there is not…

Q: Is the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so i am solving…

Q: In 2005, Health Canada claimed that 16.8% of Canadian adults are obese. A researcher wanted to check…

A: Given, The sample proportion is,

Q: Please help with the last part of this question finding the test statistic. A study was conducted to…

A: Given n1=312 X1=63 n2=300 X2=12

Q: Identify the null and alternative hypotheses. Ho The sex of the respondent and the choice for the…

A: Approach to solving the question: Detailed explanation:Hypotheses   Null Hypothesis (H₀): The sex of…

Q: A graduate student believes that people consider faces with more contrast between lip color and skin…

A: From the provided information, The hypotheses are as follow: H₀: The level of contrast between lip…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 33%. Given the…

A: Answer: From the given data, Population proportion (P) = 33% = 0.33 Sample size (n) = 1875 x = 436…

Q: 4) A retailer wants to determine if there is a significant difference in the average purchase…

A: Two different customer groups:Loyalty program ()No Loyalty program ()35284032383045293731

Q: Create a study that test factors that affect a students mental health.     Purpose is to identify…

A: Given that, The variable of interest is factors that affect a student's mental health. The null…

Q: a study was conducted to determine the proportion of people who dream in black and white instead of…

A: The objective of this question is to test the claim that the proportion of people over 55 who dream…

Q: In 2013, Steve LeCompte, a stock market trader and analyst, did a study to see which TV…

A: We have given that  Sample size n =678 Favorable cases x =320 Sample proportion p^=x/n  =320/678…

Q: a) Check the conditions for carrying out a significance test of the teacher's suspicion. b) The…

A: i) Sample size should be less than 5% of the total population. n = 45/1000 n = 0.045 < 0.05   ii)…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: A case-control (or retrospective) study was conducted to investigate a relationship between the…

A: The question is about Chi-Square test for Independence. There are 2 variables. Those are Injuries…

Q: 2. Is there a difference in the proportion of individuals with food allergies between young children…

A: The sample proportions are The pooled proportion or weighted estimate of p is,

Q: According to a Yankelovich poll, women spend an average of 19.1 hours shopping during the month of…

A:

Q: In a survey of 1150 adult males, 805 said they use the Internet. In a survey of 1050 females, 746…

A: Let x1=The number of male internet users. And x2=The number of female internet users. With the usual…

Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…

A:

Q: help me fix a         thank you!

A:

Q: Consider a drug testing company that provides a test for marijuana usage. Among 298 tested subjects,…

A: Given, The sample proportion is,

Q: a study was conducted to determine the proportion of people who dream in black and white instead of…

A: The objective of this question is to conduct a hypothesis test to determine if the proportion of…

Q: Consider a drug testing company that provides a test for marijuana usage. Among 324 tested​…

A: Given that  Sample size=324 Number of subjects wrong (X)=26 Population proportion=0.10 Significance…

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

A: n1=590,x1=386,n2=538,x2=363

Q: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…

A: Given X=1723 n=2500

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Dear student as per guidelines we answer the first three subparts only. Please post other subparts…

Q: Explain why different conclusions were reached in the hypothesis tests of parts (a) and (b). Getting…

A: Given,the two hypothesis tests for proportion test.The sample sizes were 600 in one test and 100 in…

Q: A professor wants to determine if the time of day that a class is held has any impact on exam…

A: We know that, significance level shows the probability that test will produce significant result.…

Q: A survey of 1200 TV households showed that 53.5% of them had at least one stand-alone streaming…

A: Let p be the population proportion  p=majority=1/2=0.50=50%, n=1200, p^=sample…

Q: An online poll​ asked: "Do you believe the Loch Ness monster​ exists?" Among 20,833 ​responses,…

A: Given Pcap=0.67 P=0.50 n=20833

Q: In a recent Gallup poll, 507 adults age 18 and older were surveyed and 269 said they believed they…

A:

Q: A music expert from a CD player company believes that 40% of music lovers prefer romantic music.…

A:

Q: α is the observed level of significance whereas the p-value is the preset level of significance.…

A: We have given that, α is the observed level of significance whereas the P- value is the preset level…

Q: A psychologist believes that the frequency that a person engages in sexual activity without a…

A: Chi square test is used to determine the independence of variables in the data set. There are four…

Q: In 2013, Steve LeCompte, a stock market trader and analyst, did a study to see which TV…

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

Q: The XYZ company wants to evaluate whether it discriminates against men or women in its merit pay…

A: It is given that the XYZ company wants to evaluate whether it discriminates against men or women in…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Denote p1, p2 as the proportions of all people who dream in black and white instead of color under…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: The random variable X follows binomial distribution. We have to use normal approximation to binomial…

Q: Use the stat crunch data and determine if the mean quiz score is higher for those to take the quiz…

A: It is given that, the sample size n is 10.

Q: An online poll​ asked: "Do you believe the Loch Ness monster​ exists?" Among 22,038 ​responses,63 ​%…

A: Solution: From the given information, p-hat = 0.63 and n = 22,038.

Q: The US Department of Energy reported that 46% of homes were heated by natural gas. A random sample…

A:

Q: Test the hypothesis that a majority (more than 50%) believe the rich should pay more taxes than they…

A: here given , Suppose a poll is taken that shows that 281 out of 500 randomly selected, independent…

Q: One survey showed that among 766   randomly selected subjects who completed four years of​ college,…

A: Denote p as the true population proportion of smokers in the college.