A market research firm reported the mean annual salary for all family practitioners in the US is $178,258. A random sample of 51family practitioners in Los Angeles had a mean of $192,340 with a standard deviation of $42,387. At a significance level of 5%, this calls for a test of significance to determine if the mean salary of family practitioners in LA is greater than the national average. State the null and alternative hypotheses. Determine the value of the test statistic. Between what 2 p-values does your test statistic lie? What is your conclusion from the above test?

Q: A national survey reports that the average number of screens (TVs, computers, tablets, and…

A: Solution We have given The null and alternative hypothesis H0: μ=10.7    H1:μ≠10.7

Q: A simple random sample of 51 people read The Fellowship of the Ring. It took them an average of…

A: For  people who read The Fellowship of the Ring : Sample Mean 1 (Xˉ1​) = 12.0412.04 Sample…

Q: The accounts of a corporation show that, on average, accounts payable are $125.32. An auditor…

A: From the provided information, the followings are obtained: The claimed population mean amount (in…

Q: Nafuz manages the credit department for a grocery store chain in the province, and would like to…

A: From the given information Null Hypothesis: H0: The mean monthly balance of credit card holders is…

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A: We have given that Mean(µ) = 281 Population Standard deviations (σ) = 47 Sample size (n) = 50

Q: Teal year 50 mathematics and statistics graduates at a large university who received job offers…

A: Sample size n=50

Q: According the the U.S. Department of Education, full-time graduate students receive an average…

A: Solution We will use distribution to calculate the probability.

Q: at the time she was hired as a server at the grumney family restaurant, beth brigden was told, "you…

A: From the provided information, Population standard deviation (σ) = 3.24 Sample mean (x̄) = 84.85…

Q: Suppose you know the population average wage in the manufacturing industry in California is $24.66…

A: Given information: n=30, σ=2.35, μ=24.66α=0.01 Use the excel formula, "=NORM.S.INV(0.01)" for…

Q: Mean entry-level salaries for college graduates with mechanical engineering degrees and electrical…

A: Given, For mechanical engineers: mean=46300 n=42 s.d =3420 For electrical engineers: mean=46800 n=60…

Q: A special academic program for skilled students conduct an admission exam to select their new…

A: Given  Mean score=66 Sample size=n=18 Sample mean=X_bar=62 Sample standard deviation=s=8.7 Level of…

Q: the Champlain College pretends that average rent in Lennoxville for a 2 bedrooms apartment is $500.…

A: H0 : ? =500 H1 : ? ≠500 Population mean = ? = 500 Sample S.D = s =10 Sample size = n =41…

Q: The admitting office at Sisters of Mercy Hospital wants to be able to inform patients of the average…

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

Q: Automobile Insurance Premiums. Insure.com reports that the mean annual premium for automobile…

A: Given Information: Hypothesized value of population mean is 1365 Sample size n=25 Sample mean…

Q: The mean tuition and fees for a sample of 11 private colleges was $36,500 with a standard deviation…

A: we have given that  sample size =11  ,sample mean= 36500 , standard deviation =5400 and mu=40000

Q: i. form z or tar where df is the degrees of freedom. Round your answer to two decimal places.) State…

A: Mechanical Engineer n1 = 50x1 = 46300s1 = 3450 Electrical Engineern2 = 58x2 = 46800s2 = 4230…

Q: more income than the national average?

A: Given that  The mean income per person in the United States is $44,500 (μ=44500) The distribution of…

Q: Last year, the average amount that teams for the Statistics Games raised was $375. Have teams been…

A:

Q: respectively. Their standard deviations were $3450 and $4230, respectively. Conduct ypothesis test…

A: Mechanical Engineer n1 = 50 x1 = 46300 s1 = 3450 Electrical Engineer n2 = 58 x2 = 46800 s2 = 4230

Q: When 41 people are used the Weight Watchers diet for one year, their weight losses had a standard…

A: Hypotheses:H0: σ² = 36H1: σ² ≠ 36(Note: The value 36 comes from squaring the standard deviation of…

Q: The average salary of North Carolina is reported to be $50,781. After completing a survey of 120…

A: Given,   Sample size = 120 Sample mean = 51203 Sample standard deviation = 2409   Set up the null…

Q: A study of compulsive buying behavior conducted a national telephone survey in 2004 of adults aged…

A: Given Sample 1 →compulsive   mean, x1=   3399.00                  standard deviation,  s1 =…

Q: A national survey reports that the average number of screens (TVs, computers, tablets, and…

A: Given , Population mean = μ = 10.7 Population standard deviation = σ = 1.5 Sample size n = 35 Sample…

Q: According to the National Association of Home Builders, the average cost of building a home in the…

A: The summary of the statistics is, x¯=$123.87,s=$17,n=38,μ=$117.91 The claim of the hypothesis test…

Q: Suppose that Randy is an analyst for the bicyling industry and wants to estimate the asking price of…

A: The summary of the statistics is The degree of freedom is, Critical values: The t-critical values…

Q: For this problem you will need: pencil, paper, calculator, z-crit significance levels. and a NC…

A: Given , Hypothesized population mean = μ =15000  Population standard deviation = σ = 1200 Sample…

Q: Carlos and Devon both accepted new jobs at different companies. Carlos's starting salary is $36,000…

A: Carlos's starting salary is $36000Devon's starting salary is $33000Carlos's company offers…

Q: Eddie Clauer sells a wide variety of outdoor equipment and clothing. The company sells both through…

A: The 90% confidence of the diffeence of population mean [$-37.156 , $0.756] #Rounded to 3 decimal…

Q: Fry Brothers Heating and Air Conditioning, Inc. employs Larry Clark and George Murnen to make…

A: Hypothesis Test: Independent Groups (t test, pooled variance)                       Larry…

Q: A report states that the mean yearly salary offer for students graduating with a degree in…

A: From the provided information, Sample size (n) = 50 Sample mean (x̅) = 49830 Sample standard…

Q: A report states that the mean yearly salary offer for students graduating with mathematics and…

A: According to the given information in this question, we need to answer all the parts

Q: Carlos and Devon both accepted new jobs at different companies. Carlos's starting salary is $32,000…

A: The Z-scores can be calculated using the given formula.

Q: During 2008, college work-study students earned a mean of $1478. Assume that a sample consisting of…

A: Given: Sample size (n) = 25 Population mean μ=1478 Sample mean x¯=1503 Sample standard deviation (s)…

Q: The mean income per person in the United States is $36,000, and the distribution of incomes follows…

A: Ytyi

Q: Formulate the null and alternative hypotheses that can be used to suggest that the average earnings…

A: It is an important problem in testing of hypothesis . It has got wide applications in all types of…

Q: uppose Michigan State University's Collegiate Employment Institute found that starting salaries for…

A:

Q: average of typical sleep time on a school night is 6.8 hours with a standard deviation of 1.2 hours.…

A: Solution: Given information: n= 47 Sample size x = 6.8 Sample mean s = 1.2 Sample standard deviation…