Statistics Question

Q: If n=570 and ˆpp^ (p-hat) =0.89, find the margin of error at a 95% confidence levelGive your answer ...

A: It is given that the value of n is 570, p hat is 0.89 and the confidence level is 0.95.Here,

Q: Explain the difference, in your own words, between a null hypothesis and the alternative hypothesis....

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

Q: An auto manufacturing company wanted to investigate how the price of one of its car models depreciat...

A: Excel Procedure for Regression: Enter the data for Age as (3 & 8) and Price (99 &18) in Exce...

Q: Below is the output from regression.  Use the p-value and decide if the equation is good to use for ...

A: Given:Output given for regression analysis.This output tells us about the equation is good to use fo...

Q: Part D. Please show TI 84 steps

A: Given:p= 0.50.n = 40x­ = 0.50(40) = 20Confidence level = 0.99

Q: For the data set, perform exponential smoothing with alpha = 0.1 to determine the forecast for week ...

A: Given data and forecast for the following week is shown here

Q: A physicist examines 10 water samples for iron concentration. The mean iron concentration for the sa...

A: From the given information, the sample size is 10, the sample mean iron concentration for the sample...

Q: A deck of cards has 52 cards, 13 are hearts, 13 are diamonds, 13 are spades and 13 are clubs. You ge...

A: From the given information, there is a deck of 52 cards, there are 13 number of diamonds, 13 number ...

Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good b...

A: It is given that the sample size 61 and the number of successes is 27.The population proportion is 0...

Q: 8q3r4 Group 1 Group 2 2358 2548 2382 2574 2683 2439 2489 2499 2640 2579 2572 2361 2713 2567 2676 260...

A: (a)The hypotheses are given below:

Q: A study at Harvard found that 44% of their students binge drink.  You are at Princeton doing a simil...

A: According to the provided information, a study at Harvard found that 44% of their students binge dri...

Q: I need help with question 18 please

A: Sample mean and sample standard deviation:Enter the data in an EXCEL sheet such that A1:A7 represent...

Q: A sample of 45 small generators produce fumes that was observed to be 700 ppm with a standard deviat...

A: (a)The 95% confidence interval for true average amount of fumes for a population of all similar gene...

Q: As you probably know, the Titantic, on its maiden voyage, hit an iceberg and sank in the matter of h...

A: Note:Hey there! Thank you for posting the question. However, since your question has more than 3 par...

Q: It has been said each LP problem that has a feasible region has an infinite number of solutions?  Wh...

A: In each LPP, since the feasible region is continuous, and if we can consider accepting non-integer s...

Q: The shaded region under a Normal distribution with mean 0 and standard deviation 1 (Standard Normal ...

A: Standard normal distribution:The standard normal distribution is a special case of normal distributi...

Q: Find the mean from its definition. That is, find the sum of the six observations and divide by 6.The...

A: Note:Thank you for the question. We have considered the given values as the observations in the data...

Q: SAT scores: The College Board reports that in a recent year, the mean mathematics SAT score was 514,...

A: Given information:Population mean = 514Standard deviation = 118Sample size (n) = 65

Q: 15L

A: According to the provided question, suppose 3 block towers are made which is 3 block tall, 6 block t...

Q: Problem in photo

A: Solution:The hypotheses are stated below:Null hypothesis:There is no association between alcohol con...

Q: 8.16 A,B,C

A: Given data

Q: Part A,B,C

A: a)Favorable outcome = 344Total outcome (n) = 1170Now, estimate of the population proportion (p) is c...

Q: Use the p value method and fill in the blanks to address the claim:  A supplier of digital memory ca...

A: Solution: We are given that a supplier of digital memory cards claims that less than 1% of the cards...

Q: 9.26 According to the U.S. Bureau of Labor Statistics, all workers in America who had a bachelor's d...

A: Hypotheses:Let µ be the mean weekly earning of American workers who have a bachelor’s degree. The ai...

Q: Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is norma...

A: It is given that the mean and standard deviation are 50,000 and 12,000, respectively.

Q: Today, the waves are crashing onto the beach every 4.3 seconds. The times from when a person arrives...

A: 1)The probability that the wave will crash onto the beach between 0.8 and 2.3 seconds after the pers...

Q: Normal distribution problem: Mean = 10; SD = 2; X=8, X=12 A farmer believes that the yields of his t...

A: The provided information are:

Q: Suppose 234 subjects are treated with a drug that is used to treat pain and 55 of them developed nau...

A: Here, the claim of the test is that more than 20% of users develop nausea. This is representing in a...

Q: Suppose that you are offered the following "deal." You roll a six sided die. If you roll a 6, you wi...

A: a.The possible outcomes when rolling a die is {1, 2, 3, 4, 5 and 6}.The formula for finding probabil...

Q: For a normal distribution, identify the z-score location that would separate the distribution into 2...

A: 1.Step-by-step procedure to obtain the z-score location using MINITAB:Choose Graph > Probability ...

Q: A sample of 100  cell phone batteries was selected. Find the complements of the following events. Ex...

A: Complement events:Complement of an event A is the set of all outcomes in the sample space that are n...

Q: 2. Which of the following are practical ways to assess normality of the residuals? Select all that a...

A: Normal Probability Plot:A normal probability plot is a graphical technique for checking whether or n...

Q: At SKYCTC, the average class size is 22. A recent survey of five math classes showed the average cla...

A: Parameter:Any statistical measure based on all units in the population is called Parameter.Here, the...

Q: How do find the answer on paper and the TI84

A: Computation of regression line equation:Step-by-step procedure to find the regression line equation ...

Q: The table shows the values found in the error analysis.  What method of forecasting would be best to...

A: The table is given below:

Q: You have been asked to find if there is a correlation between the amount of calories per serving in ...

A: Note:Hey there! Thank you for posting the question. However, since your question has more than 3 par...

Q: The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 22 people re...

A: Sample mean = 76 gallons.Sample standard deviation, s is 18 gallons.The sample size, n is 22.a).Sinc...

Q: Volunteers at a teen hotline have been assigned based on the assumption that 40% of all calls are dr...

A: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have solved...

Q: How large of a sample is required if we want to estimate the mean price of a five year old Corvette ...

A: Obtain the critical value at 90% confidence level:It is given that the standard deviation value is $...

Q: Please explain step by step.

A: Binomial distribution:The binomial distribution gives the probability of number of successes out of ...

Q: #11.   Compute the following problem using the estimation of proportions tab in Excel. Write your an...

A: The formula for the 90% confidence interval for the proportion is given below:

Q: According to a survey the percent of high school graduates is 69%. One city wanted to know if the pr...

A: The provided information:number of favorable cases = x=98 and the sample size is n = 150. 

Q: A group of students estimated the length of one minute without reference to a watch or​ clock, and t...

A: GivenNull hypothesis Ho: µ = 60Alternate hypothesis Ha µ ≠ 60level of significance = 0.01from the gi...

Q: 7 part a, b, and c

A: Here, denote µ1, µ2, µ3, µ4  as mean number of problems solved by the four groups.

Q: 4 and 5 please. TI 84 steps please

A: It is given that the test statistic is –1.7891 and the test is left tailed.

Q: Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is norma...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: I need help finding the answer on the TI84 Plus CE and on paper ?. Thank you

A: Note:Hey there! Thank you for the question. As you have posted two different questions together, acc...

Q: 15L

A: It is given that the person runs 3 miles every day for 5 days. The average miles over 6 days is 4 mi...

Q: Please show TI 84 steps

A: The z-test is considered in this is a left-tailed test.The level of significance is, α = 0.01.Since ...