onsider the following hypothesis test: H 0:   50 H a:  > 50 A sample of 70 is used and the population standard deviation is 9. Use the critical value approach to state your conclusion for each of the following sample results. Use  = .05. a. With  = 52.5, what is the value of the test statistic (to 2 decimals)?   Can it be concluded that the population mean is greater than 50? SelectYesNoItem 2  b. With  = 51, what is the value of the test statistic (to 2 decimals)?   Can it be concluded that the population mean is greater than 50? SelectYesNoItem 4  c. With  = 51.8, what is the value of the test statistic (to 2 decimals)?   Can it be concluded that the population mean is greater than 50? SelectYesNoItem 6

Q: a. A financial company is running a training program where participants learn how to conduct a fast…

A: Question based on natural tolerance

Q: ngle people who were surveyed had an average salary of $51,110 and a standard deviation of $16,270.…

A: Sample size n =33 Sample mean=51110 Standard deviation =16270 NOTE:- According to bartleby…

Q: You want to obtain a sample to estimate a population mean age of the incoming fall term transfer…

A: σ = 5.490% ci for μ.E = 1.8n = ?

Q: You are testing the claim that the mean GPA of night students is less than the mean GPA of day…

A: Given that  Sample Mean 1 (\bar X_1)(Xˉ1​) = 2.582.58 Sample Standard Deviation 1 (s_1)(s1​) =…

Q: Some college graduates employed full-time work more than 40 hours per week, and some work fewer than…

A:

Q: You decide to test the claim that the mean Age of TCC students is less than 30 at the .05…

A: It is given that the sample mean and standard deviation are 27.4 and 9.2, respectively.

Q: Mean: 37.52 Median: 38.00 Standard deviation: 9.760 Using the values that you generated above,…

A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263.1…

A:

Q: 1. Collected data shows that about 220,00o high schoolers took the AP in 2020. The FRQ section of…

A: a)Given For a certain problem Sample size n=35Sample mean X__=1.627Sample standard deviation s=1.320…

Q: The mean age at first marriage in the U.S. is 28. A random sample of 626 married residents of New…

A: Sol: Given, Sample size = 626 Sample mean = 27.7 Standard deviation = 2.9 Population mean = 28

Q: What would your decision be on this hypothesis test if we use a level of significance for the test…

A: Here given cereal is claimed to have an average of 3 grams of dietary fiber per serving  Here test…

Q: Many people believe that the average number of Facebook friends is 140. The population standard…

A: Given : μ=140n=39x=152s=37.9We want to find Null hypothesis H0 and alternative hypothesis H1.

Q: The manufacturer of a certain brand of auto batteries claims that the mean life of these batteries…

A: The given sample has a size n=24, the sample mean is x¯=43 and the population standard deviation is…

Q: The director of research and development testing and new drugs she wants to know if there's evidence…

A: Test statistic:Denote μ as the claimed mean; μ = 384. In a random sample of n = 79, the sample mean…

Q: you want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

A:

Q: Body temperatures of healthy adults have a bell-shaped distribution with a mean of 98.20°F and…

A: From the provided information, Population mean (µ) = 98.20 Population standard deviation (σ) = 0.62

Q: refer to image In a follow-up study, researchers would like to estimate the mean body temperature…

A: Given : Margin of error : E = 0.05 s = 0.712 confidence level : Cl = 88%=0.88 level of significance…

Q: Students claim that their teacher has been grading them more harshly than she has in the past.…

A: The random variable grade follows normal distribution. We have to test whether the students proven…

Q: The null hypothesis is that the laptop produced by HP can run on an average 120 minutes without…

A: Given,sample size(n)=60sample mean(x¯)=124population standard deviation(σ)=25Null hypothesis:…

Q: sample of 50 laptops, the sample mean is 122 minutes. Test this hypothesis with the alternative…

A:

Q: has long been stated that the mean temperature of humans is 98.6°F. However, two researchers…

A:

Q: A shop owner claims that his shop earns an average of 10 000 a day with a standard deviation of…

A: From the provided information, Mean (µ) = 10000 Standard deviation (σ) = 850 X~N (10000, 850) Sample…

Q: A carpet manufacturer is inspecting for flaws in the finished product. If there are too many…

A: Solution: From the given information, n=10 and σ=0.6.

Q: Epain why it is necessery e check that the population is approimately normal before performing a…

A:

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: given that, standard deviation (σ) = 68.2 margin of error (E) = 10 90% level of confidence

Q: Use Excel's Analysis ToolPak, with a seed of 1, to simulate 906 random observations of a normally…

A: Generation of 906 normal random observations with Random seed  = 1 Mean = 8.08 and standard…

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 263.8…

A: For the distribution of the bool platelets (in 1000 cells/) in women, which is interpreted to be…

Q: A researcher wants to estimate the average number of hours students spend in social media in a day.…

A: Given Standard deviations=45 Margin of error=5 Z=1.645

Q: A sociologist claims that children spent more time watching television in 1981 than children do…

A: Mean is the number of observations divided by the total number of observations:   1981 Recently…

Q: 22. In a Mathematics test, the average mark is 82 and the standard deviation is 5. All the students…

A:

Q: Consider a value to be significantly low if its z score less than or equal to - 2 or consider a…

A: A test score is considered to be significantly low if it is two standard deviations below the mean…

Q: Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see…

A: Given: The random sample of drivers over the age of 60 are n=35. The sample mean number of miles…

Q: Here is a POPULATION of scores: 4 2 3 2 30. What is the standard deviation for this population of…

A:

Q: mperature at which a certain compound melts is a random variable with mean value 115°C and standard…

A: It is given that the temperature at which certain compound melts are a random variable with a mean…

Q: Suppose that you want to perform a hypothesis test for a population mean. Assume that the population…

A: For testing population mean: If sample size is small and the population is normally distributed…

Q: Can you help me find the p-value for this problem

A: Variable definition: Let μ be the mean number of cars that use the road on a daily basis.…

Q: The historical reports from two major networks showed that the mean number of commercials aired…

A: (a) Hypotheses: H0: μ1=μ2H1: μ1≠μ2

Q: CH5: For a sample with M = 62, a score of X = 51 corresponds to z = -0.34. What is the sample…

A:

Q: Im confused on #1.) Letter C. I already found the 68% range and the 95% range by using the empirical…

A:

Q: A researcher would like to determine if a new procedure will decrease the production time for a…

A: given data sampple size (n) = 16sample mean ( x¯ ) =42sample standard deviation (s) = 7claim : μ<…

Q: Q10: Claim: The mean pulse rate ( in beats per minute) of adult males is equal to 69 bpm. For a…

A: