A teacher claims that his students have an average social media usage that is different from 1.83 hours a day. If a random sample of 8 students have daily social media usage of 2.0, 1.7, 2.1, 1.9, 2.2, 2.1, 2.0 and 1.6 hours. Would you believe with the teacher’s claim with a 0.05 level of significance? Compute the test statistic Decision is State the conclusion

Q: A random sample of 860 births in New york state included 434 girls. Use a 0.05 significance level to…

A: The aim is to test the claim that 48.8% of newborn babies are girls. The test hypotheses are given…

Q: A television executive claims that the percent of households that watch the Macy's parade on…

A: The null and alternative hypothesis is given by,H0:P=0.65Ha:P<0.65 Given: n=171, x=households…

Q: Two researchers conducted a study in which two groups of students were asked to answer 42 trivia…

A: Confidence interval is an interval such that the probability of the unknown parameter to be included…

Q: a ghed to one of the four programs and their output for a day's work has been recorded. You are…

A: Given that : A table is given by using one way anova concept we complete this table and using…

Q: distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that…

A: NOTE:- According to bartleby guidelines expert can solve maximum three subpart of a question and…

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: What are the correct hypotheses?  H0:          Correct        Correct  hours H1:          Correct…

A: We want to find null hypothesis,  alternate hypothesis, test statistics and P-value

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Denote μ as the population mean working hours.

Q: One study claimed that 86% of college students identify themselves as procrastinators. A professor…

A:

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: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: State the hypotheses. That is, there is no evidence to conclude that the employees at start-up…

Q: Refer to Exhibit 1. The mean square between treatments is O 16350 8750 O 475 O 2916.67

A:

Q: A random sample of 834 births included 433 boys. Use a 0.05 significance level to test the claim…

A:

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Introduction: Denote μ as the true mean time worked by an employee at start-up companies, in a work…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A:

Q: cording to a survey, the average American person is in a car for 5 hours per week. To test if the…

A:

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Solution: n= 12 Sample size  μ=47 Population Mean  ∑x=622x=∑xn=62212=51.8333 Sample…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Solution: Since the test is about mean the symbol should be used is µ. State the hypotheses. Null…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: We have given that  data  Population mean mu= 47  Level of significance =alpha = 0.01 Sample size…

Q: Researchers claimed that women exercise at the same proportion as men do. To test this claim, a…

A: For the given data Perform Z test for two proportions

Q: In a random sample of 315 people 90 of them were smokers. Based on the above sample test whether the…

A:

Q: I asked 45 randomly selected WSU college students how many US states they had visited. The students'…

A: The sample size is 45, sample mean is 3.8 and standard deviation is 1.5. The degrees of freedom is,…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Answer Given,The level of significance = 1% = 0.01The sample size [n] = 12

Q: The director of research and development is testing a new medicine. She wants to know if there is…

A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…

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: A researcher believes that college students tend to maintain a healthier diet and, consequently,…

A: Population: CDC database about the age group 18-21 across the nation. Sample: sample of students BMI…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A:

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

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

Q: Suppose 243 subjects are treated with a drug that is used to treat pain and 50 of them developed…

A: Given, The number of subjects treated with a drug that is used to treat pain is n=243 The number of…

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: he work week for adults in the US that work full time is normally distributed with a mean of 47…

A: The formula for the t test statistic is, t=x¯-μsnμ is the population means is the sample standard…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Given data: Population mean = 47 Sample size  = 12 Significance level  = 0.05

Q: What are the null and alternative hypotheses? Họ: | versus H,: (Type integers or decimals. Do not…

A: Given : Proportion of respondents who stated they talk to their pets on phone = 0.45 Sample size =…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A:

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A:

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: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Step 1:Given:Sample size, n = 12Data454951554768465545495351Step 2:Goal:State the Null and…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Given that  X denotes the number of hours US adults work  The population mean =47 hours  X follows…

Q: random sample of 851 births included 431 boys. Use a 0.10 significance level to test the claim that…

A: Given data number of success , x= 431.0 sample size, n = 851 population…

Q: In a survey, 45% of the respondents stated that they talk to their pets on the telephone. A…

A: Given,n=240x=104p^ =xn p^ =104240 p^ =0.4333H0 :P=0.45H1 : P<0.45α=0.01

Q: In 2005, Health Canada claimed that 16.9% of Canadian adults are obese. A researcher wanted to check…

A: From  the given information,   α=0.07

Q: A simple random sample of 300 men included 71 who smoke, and a simple random sample of 310 women…

A: Given: Sample sizes: Sample of men n1=300 Sample of women n2=310 Number of men who smoke X1=71…