A species of fish can be born with either blue fins or green fins. It is thought by researchers that 23% of these fish at any given time have blue fins. However, a newer research doubts this finding, and think that the percentage of fish with blue fins is higher. He wants to do a test at a 10% significance level, so he collects a sample of 200 fish, and 53 are found to have blue fins.  What is the probability that this researcher has committed a Type I error?

Q: An employee claims that 20% of the email she receives is personal, 60% is work related, and 20% is…

A: Given data An employee claims that 20% of the email she receives is personal 60% is work related and…

Q: OA. Ho:p=0.29 H:p>0.29 OB. Ho: p=0.29 H;:p#0.29 OC. Ho: p=0.29 H:p<0.29 OD. Ho: p#0.29 H:p=0.29…

A: Here , we are testing whether the percentage of blue candies is equal to 29% This would be a two…

Q: A statistics student believes that black cars are less likely to receive tickets for moving…

A: It is given that the P-value is 0.24.

Q: Postpartum depression and anxiety (PPD). is a common medical condition affecting mothers and their…

A:

Q: Annie is concerned over a report that "a woman over age 40 has a better chance of being killed by a…

A: Given that the chance of marriage for a never-previously-wed, 40-year-old university-educated…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: GivenMean(x)=63.4standard deviation(s)=15.1sample size(n)=25α=0.025

Q: Postpartum depression and anxiety (PPD), is a common medical condition affecting mothers and their…

A: From the provided information,Simple random sample of 74 women who had given birth in the last year…

Q: Suppose that in a random selection of 100 colored​ candies, 30​% of them are blue. The candy company…

A: Given information n = 100 coloured candies p-hat = 0.30 p = 25% Claim :- Percentage of blue candies…

Q: According to the 2018 General Social Survey (GSS), 60% of all U.S. households have at least one pet.…

A: Here one proportion Z - test stats is applicable

Q: The National Academy of Science reported that 31% of research in mathematics is published by US…

A: Given : Hypothesized proportion : p0=0.31 Claim : Proportion is different from 0.31 . Sample size :…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: The objective of this question is to test the claim of a customer that it takes more than 40 minutes…

Q: Postpartum depression and anxiety (PPD), is a common medical condition affecting mothers and their…

A: Givenclaim is The true percentage of women who have PPD is greater than…

Q: e reject the null hypothesis and conclude that there is sufficient evidence at a 0.10 level of…

A: Given data number of success , x= 20.0 sample size, n = 540 population…

Q: A doctor used to believe that babies were equally likely to be born any day of the week, but with…

A: The following solution is given below:

Q: Postpartum depression and anxiety (PPD), is a common medical condition affecting mothers and their…

A:

Q: Annie is concerned over a report that "a woman over age 40has a better chance of being killed by a…

A: Population proportion = 0.034 Favorable cases [x] =20 Sample size [n] =407 Sample proportion = x/n…

Q: Postpartum depression and anxiety (PPD), is a common medical condition affecting mothers and their…

A:

Q: The National Academy of Science reported that 37% of research in mathematics is published by US…

A:

Q: In a survey of 700 random households in a particular city in NCR, adults have been 2) asked if they…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A:

Q: Postpartum depression and anxiety (PPD), is a common medical condition affecting mothers and their…

A: sample size(n)=116 x=18 significance level(α)=0.10 sample proportion(p^)=xn=18116≅0.1552

Q: Postpartum depression and anxiety (PPD), is a common medical condition affecting mothers and their…

A: Given that, The CDC estimated that 17% of women who have recently given birth suffer from PPD.

Q: In the US, 45.9% of all people have type O blood, 39.3% have type A blood, 10.8% have type B blood…

A: a.   It is needed to check whether the distribution of blood type is different for millionaires.

Q: According to a​ report, 61.3​% of murders are committed with a firearm. ​(a) If 400 murders are…

A: (a) If 400 murders are randomly​ selected, how many would we expect to be committed with a​ Firearm?…

Q: Annie is concerned over a report that a woman over the age of 40 has a better chance of being killed…

A: The hypothesis test is used to test whether the population parameter is equal to claimed value or…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: The objective of this question is to test the claim of a customer that it takes more than 35 minutes…

Q: of 50 carpenters finds that 30 are journeymen and 20 are master carpenter Of the journeymen, 10…

A: A survey of 50 carpenters finds that 30 are journeymen and 20 are master carpenter Of the…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: Formula :

Q: The National Academy of Science reported that 31 % of research in mathematics is published by US…

A: p=0.31 n=188 x=74

Q: USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey…

A: a) The sample proportion is p-cap = 205/1008           = 0.203 b) The population proportion p is…

Q: A company wants to show that its cancer drug is effective. To meet the rules it must show that it…

A: The probability of type II error is defined as the probability of not rejecting the null hypothesis…

Q: Annie is concerned over a report that "a woman over age 40 has a better chance of being killed by a…

A: Suppose p is the true population proportion of getting married for the group for women over age 40.

Q: A marketing agency wanted to determine if a new commercial changed people's opinion about a company.…

A: Statistical hypothesis means the decision about a population parameter. Here we look at the data we…

Q: In a random sample of missions flown by B-17’s, 38 returned and 24 were lost. In a random sample of…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: Postpartum depression and anxiety (PPD), is a common medical condition affecting mothers and their…

A: Given X=20 n=101

Q: According to a report, 57.5% of murders are committed with a firearm. (a) If 200 murders are…

A: Given : n = 200 p = 0.575

Q: It is difficult to conduct sample surveys on sensitive issues because many people will not answer…

A: Tree diagram:It is a graphical representation of all the possible outcomes of an event. Each branch…

Q: If a journal publishes 50 scientific papers per year, each using a significance level of 5%, what is…

A: answer is explained below

Q: Postpartum depression and anxiety (PPD), is a common medical condition affecting mothers and their…

A: Claim: the true percentage of women who have PPD is greater than 18%

Q: The National Academy of Science reported that 41% of research in mathematics is published by US…

A: Given,n=186x=92p^=xnp^=92186=0.4946α=0.05

Q: n industrial psychologist feels that a big factor in job turnover among assembly line workers is the…

A: