Identify and discuss five limitations of statistics
Q: In a random sample of six mobile devices, the mean repair cost was $80.00 and the standard deviation…
A: 99% confidence interval: (59.42,100.58) margin of error= $20.58 => With 99% confidence, it…
Q: Emily walks every day, and she keeps a record of the number of miles she walks each day. The…
A: To calculate the test statistic for evaluating the hypotheses, we can use the formula for the t-test…
Q: A local amusement park conducted a survey to determine visitors' preferences for different types of…
A: It is required to find the number of people who enjoy roller coasters, but not water slides and not…
Q: In a survey of 3226 adults, 1498 say they have started paying bills online in the last year.…
A: The survey of adults, The number of adults started paying bills online in the last year, The…
Q: Doctors are now considering prescribing social activities as a way to increase the overall health of…
A: The condition is given as the study is performed on the same subjects before and after.This is a…
Q: please answer all parts
A: DO: Enter the test statistic to 2 decimal places and enter the P-value to 4 decimal places. (Use…
Q: Explain whether one (or both) of the situations for the approximate normality of the sampling…
A: Answer (a):Correct statement are: The population of temperatures is not bell-shaped, and the sample…
Q: show clear and accurate working out please
A: Problem 1The sample proportion of the members used the Cardion Machine is 0.1538The 97% Confidence…
Q: Construct the indicated confidence interval for the population mean μ using the t-distribution.…
A: The objective of this question is to construct a 99% confidence interval for the population mean μ…
Q: 3. If all possible samples of size 16 are drawn from a normal population with mean equal to 50 and…
A: Suppose the variable of interest is x.It is given that; x follows normal distribution with mean of…
Q: A 95% confidence interval for the population proportion is (☐☐ ). (Round to three decimal places as…
A: Let p be the population proportion of the adults who believe in UFOs.Given that,Number ofadults No.…
Q: Find the specified probability. 17) Use the following probability distribution to determine P(5 <X≤…
A: The probability distribution table for the random variable x is…
Q: 111 The box plot summarizes the finishing times for the runners in a race. 14 16 18 20 22 24 26 28…
A: The objective of the question is to interpret the data presented in a box plot and determine which…
Q: In the lottery the top cash prize was 621 million going to three lucky winners players picked five…
A: It is required to find the probability of winning the minimum value.
Q: A random sample of 13 students yielded a mean of x = 71 and a variance of s² = 16 for scores on a…
A: Sample size n=13Sample variance s2=16
Q: Situation: The Ipod Touch has been out for two years now and a lot of data has been collected.…
A: A. s=T(p)=−0.34p+262 B. above C. 185200 D. $ 200Explanation:Step 1: Conduct a Linear Regression test…
Q: None
A: In 1960 , The widely accepted milestones of adulthood were : Complete schoolLeaving homeBecoming…
Q: Tables Keypad Keyboard Shortcuts In studying his campaign plans, Mr. Singleton wishes to estimate…
A: The objective of this question is to find the sample proportions, P1 and P2, for men and women…
Q: A company is investigating the length of videos posted on two different social media sites. The…
A: The sample quantities are given asSample sizemeanstandard deviationSocial media A…
Q: Use the standard normal distribution or the t-distribution to construct a 95% confidence interval…
A: 1. The correct answer is option B. "Use a normal distribution because σ is known and the data are…
Q: The monthly allowance in dollars for a random sample of high school students is displayed in the…
A: (A) A greater percentage of these students have a monthly allowance between $50 and $75 than between…
Q: A country is conducting a national survey about new home owners. The survey is sent out to the next…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Question 3 The following ACF plots were produced for raw data of monthly sales of two different…
A: Given the ACF plots were produced for row data of monthly sales of two different variables A and B.
Q: Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it…
A: The proportion of games that result in a team dinner is calculated as follows: P(Dinner) =…
Q: have a length of life that is approximately normally distributed with a standard deviation of 50…
A: n=sample size=45, σ=50,x¯=790
Q: A regression was run to determine if there is a relationship between hours of TV watched per day (x)…
A: 28.0 Explanation:The regression equation is given asy=ax+bwherea is the slope of the line, andb is…
Q: A manufacturer knows that their items have a lengths that are approximately normally distributed,…
A: 0.1266Explanation:We must have a background of the Central Limit Theorem (CLT) to be able to answer…
Q: The table below show data that has been collected from different fields from various farms in a…
A: X:55,60,65,70,80,85Y:11.9,13.7,15.9,18.5,20.8,23,25.8
Q: The following table provides the joint probability distribution for the 98th Congress by political…
A: The joint probability distribution for the 98th Congress by political party is given.Reps…
Q: In a random sample of 6 cell phones, the mean full retail price was $547.30 and the standard…
A: The t-value of t is approximately 1.66This value does indeed fall between −t0.95 and t0.95 because…
Q: . A large insurance company sells homeowner's insurance to compensate homeowners in case of damage…
A: The objective of the question is to understand the application of the Central Limit Theorem (CLT) in…
Q: Assume that different groups of couples use a particular method of gender selection and each couple…
A: a. μ= 25, σ=3.5b. low= 18, high= 32c. C. The result of 35 girls is significantly high since it is…
Q: Briefly describe the importance of statistics in business
A: The objective of this question is to understand the significance of statistics in the field of…
Q: population mean strength for the specimens cured at 130°C and let μy represent the population mean…
A: Let be the population mean strength for the specimens cured at 130 degrees Celsius and 150 degrees…
Q: The manager of a computer retail store is concerned that his suppliers have been giving him laptop…
A: From the given information :Mean , 4.4Standard deviation , 0.6
Q: Practice question #5: The U.S. Bureau of Transportation Statistics reported in 2015 that .72 of all…
A: For a 95% confidence interval, the margin of error is 0.4
Q: A distribution of values is normal with a mean of 81.1 and a standard deviation of 47.9. Find P,…
A: Given,Mean, μ = 81.1Standard deviation, σ = 47.9We need to find P72, which is the score separating…
Q: A simple random sample from a population with a normal distribution of 102 body temperatures has x =…
A: Suppose is the population standard deviation of body temperature of all healthy humans.The sample…
Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 2.6…
A: Given,Mean, μ = 2.6 years.Standard deviation, σ = 0.6 years.Let X be a random variable represents…
Q: Kirstyn conducted an experiment to determine if high school athletes run faster after warming up.…
A:
Q: Find p and q. Round your answers to three decimal places. n=150 and X=63 (2 (2 ₁ = X 5 â=
A:
Q: Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it…
A: = In the long run, 80% of the dividends will be paid.Explanation:I have 2 solutions for this one…
Q: c. What key problem would you identify in the engines?
A: A)From the given information,countCumulative PercentOil leak54(54/113)*100%=47.80%47.27%Cracked…
Q: Annual high temperatures in a certain location have been tracked for several years. Let X represent…
A: r=−0.986Explanation:The linear correlation coefficient (ρ) is a measure of strength of the linear…
Q: How well can you type with your eyes closed? A study was conducted using 6 adult volunteers who are…
A: VolunteerTest A(Vision)Test B(No Vision)Difference(A - B)1827842545313776413458461259488668588-3
Q: The table below shows the number of state-registered automatic weapons and the murder rate for…
A: a.Answer is,9.830 murders per 100,000 residents b.Answer is,11.530 murders per 100,000 residents…
Q: 1. Use the following methods to test Hoμ₁ = μ2 versus Hд μ₁ μ2 for the data in worksheet 9.1 of the…
A: To test the hypothesis 'H_0: \mu_1 = \mu_2 \) versus 'H_1: \mu_1 \neq \mu_2 \' for given data, we…
Q: Consider the Markov chain with transition matrix P = 0 0 1 0 (a) Show that this is irreducible and…
A: Given the Markov chain with transition matrix:
Q: A group of biologists investigated a species of worms whose length can be characterised by a normal…
A: The objective of this question is to find the length of the worms such that only 1% of the specimens…
Q: Practice Questions 1) An instrument is to be used as part of a proposed SPC implementation. The…
A: The process of estimating gauge repeatability and reproducibility involves calculating the…
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