If your null and alternative hypothesis are: H0:μ=64H0:μ=64  H1:μ<64H1:μ<64 Then the

Q: A miniature golf course was recently added at the fairgrounds in a U.S. state. To see what sorts of…

A: Group 1 (With Children) Visited the miniature  Sample size (n1)=75  Number of children visited…

Q: a random ticket was selected, what would be the probability that the driver was female? b) Given…

A: The table below lists a random sample of 46 speeding tickets on I-25 in Colorado.   0-10 mph…

Q: Seniors at a high school are surveyed about what genre of music they listen to the most. 20.…

A: Hindi thank you  for posting  this question. Since you post multiple  question  we have solve first…

Q: In an educational study, the researchers hypothesised that older students tend to make more…

A: In an educational study, the researchers hypothesised that older students tend to make more…

Q: Express the confidence interval (79.7%, 93.5 %) in the form of p + ME. % ± %

A: The confidence interval is (79.7% , 93.5%)Lower confidence limit=79.7%Upper confidence limit=93.5%

Q: Find the indicated probability assuming that x is a random variable with a normal distribution with…

A: Answer: From the given data, X is a normal random variable with Mean (μ) = 100 Standard deviation…

Q: The probability that more than 14 of those survyded feel the state , n=20 , p=0.45

A: Answer: From the given data, Sample size(n) = 20 P = 0.45 X~Binomial distribution(20,0.45)

Q: Suppose that a recent poll found that 48% of adults believe that the overall state of moral values…

A: From the provided information, 48% of adults believe that the overall state of moral value is poor…

Q: would like to study if the school that students attend (Rutgers or Columbia University) impacts the…

A: Study if the school that students attend (Rutgers or Columbia University) impacts the time of…

Q: Suppose that E and F are two events and that N(E and F)=420 and N(E)=520 what is P(FE)

A: Answer: From the given data, N(E and F) = 420 N(E) = 520

Q: Find Interquartile Range (IQR) for the following set of data: 22,32,37,33,33,40,39,47,38

A: We have given the data set: 22 32 37 33 33 40 39 47 38 n=9

Q: - fxy (x, y) = {4y(x − y)e¯(x+y), 0, 0<x<∞,0 < y < x; elsewhere

A: X and Y are independent iff  F(x,y)=f(x)f(y)

Q: Do prep classes effectively increase SAT scores? The following study cited in a major newspaper…

A: The dependent variable in both studies is SAT scores, and the independent variable is the type of…

Q: he probability that exactly 32 of 120 eligible voters voted is 4.6867 Round to four decimal places…

A: given data, we have to use normal approximation to find out the given…

Q: R1 R2 Total C1 5 8 13 A Contingency table is shown above. Identify P(R1|C2)? C2 8 9 17 Total 13 17…

A: Answer: From the given data,                             C1                C2            Total R1…

Q: Confidence intervals for the mean: If you only know the standard deviation of the sample, then you…

A: Confidence intervals for the mean: If you only know the standard deviation of the sample, then you…

Q: A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to…

A: n=275, X=115

Q: The standard deviation for a population is a 14.8. A sample of 21 observations selected from this…

A: The standard deviation of the population is 14.8. The sample mean is 137.55 and the sample size is…

Q: The article "Gas Cooking, Kitchen Ventilation, and Exposure to Com- bustion Products" reported that…

A: given that,sample mean, x =654.16standard deviation, s =164.43

Q: Find the range of the given data: Minimum = 18, Mean = 14, Median = 26, Maximum = 38

A: Answer: From the given data, Minimum value = 18 Mean = 14 Median = 26 Maximum = 38

Q: Annual starting salaries for college graduates with degrees in business administration are generally…

A: Answer: From the given data, Population standard deviation (σ) = $ 3750 Margin of error (E) = $ 400…

Q: supose that events E and F are independent with P(E) = 0.6 and P(F) = 0.7, What is P(E and F) (round…

A: Answer: From the given data, The events E and F are independent P(E) = 0.6 P(F) = 0.7

Q: Final calculations for confidence interval values should be rounded to at least 3 decimal places.…

A: The CI gives the range of values in which the pop. parameter lies with certain confidence.

Q: In a mid-size company, the distribution of the number of phone calls answered each day by each of…

A: Mean(µ) = 61Standard deviations (σ) = 5X ~ N (µ, σ )= N(61,5) Using Empirical rule we haveP( µ - 1σ…

Q: Child Health and Development Studies (CHDS) has been collecting data about expectant mothers in…

A: To find the p-value, we need first to state the null and alternative hypotheses. Let µ be the true…

Q: Assume that we are conducting a Chi square test. There are 5 rows and 3 columns. Calculate degrees…

A: Answer: From the given data, Here we are conducting a chi square test Number of rows (r) = 5 Number…

Q: Genetic studies have shown that 4% of Americans with European descent also have African ancestry. A…

A: Given data,p=4%=0.04n=500calculate a 95% confidence interval

Q: res on a standardized exam are normally distributed with a mean of 503 and a standard deviation of…

A: X~N( μ , ?)   μ=503 , ?=90   Z-score =( x - μ )/?

Q: A children’s clothing company sells hand-smocked dresses. The length of one particular size of dress…

A: sample size, n=29sample mean, x¯=46.32standard deviation, s=2.70 Null Hypothesis: H0:μ=45…

Q: Which of the following is a recommendation you should follow when you have a significant interaction…

A: The correct recommendation when we have a significant interaction effect is to avoid interpreting…

Q: Compute the P- value of the chi-square statistic, X^2, using software. You may find software manuals…

A: k= 9 Categories  The value of the chi-square test statistic is 3.042

Q: Independent samples t-tests can be used...   with both experimental and non-experimental designs…

A: Independent samples t-tests are a statistical analysis tool used to compare the means of two…

Q: Hosting a wedding in the United States has gotten expensive. In 2009 the average cost of a wedding…

A: The sample size is 36, sample mean is $29,246 and sample standard deviation is $3,667.

Q: A publishing company has just published a new college textbook. Before the company decides the price…

A: From the provided information, Sample size (n) = 22 Sample mean (x̄) = 123.75 Population standard…

Q: Find the five-number summary for the following set of data. Data 2 7 9 10 12 12 16 17 21 21 25…

A: 2,7,9,10,12,12,16,17,21,21,25

Q: Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities…

A: n=10 mean : x¯=∑xn=171910=171.9 Standard Deviation :…

Q: The equation of a regression line, unlike the correlation, depends on the units we use to measure…

A: (a) Obtain the equation of the regression line for predicting percent body fat from preferred amount…

Q: Given the following sample data, complete parts a and b. Click the icon to view the sample data. a.…

A: sorry for the inconvenience, I will submit the Minitab solution instead of excel but solution will…

Q: You would like to construct a 99% confidence interval to estimate the population mean score on a…

A: As we know that sample mean is an unbiased estimate of the population mean. also it is a consistent…

Q: In a study of 420,114 cell phone users, 134 subjects developed cancer of the brain or nervous…

A:

Q: where the 1.63 and the 0.25 come from

A: The value 1.63 is the calculated test statistic, which measures the difference between the sample…

Q: The scores in a cricket tournament are normally distributed with a mean of 221 runs and a standard…

A: Answer: From the given data, The scores in a cricket tournament are normally distributed with…

Q: Company records indicate that at most 45% of employees commute to work using public transportation.…

A: p=0.45, n=65, x=35

Q: Recently, the number of airline companies that offer in-flight Wi-Fi service to passengers has…

A: From the provided information, Sample size (n) = 250 From which 49 passengers indicated they would…

Q: company says that the mean gas mileage for its luxury sedan is at least 21 miles per hat a random…

A: Sample size n =7 Sample mean=18 Standard deviation =5 NOTE:- According to bartleby guidelines expert…

Q: Length of snowboards in a boardshop are normally distributed with a mean of 150.4 cm and a standard…

A: Length of snowboards in a boardshop are normally distributed with a mean of 150.4 cm and a standard…

Q: What is the p-value for this hypothesis test?

A: Commute times in the U.S. are heavily skewed to the right. We select a random sample of 490 people…

Q: The figure shows population density (people per square mile) for all states of a certain country.…

A:

Q: Question 1 Fifty students from the University of Technology in Malaysia took the Foundation Entry…

A: here as per guidelines i have calculated first main question as you have posted multiple question .…

Q: The test statistic of z = 2.55 is obtained when testing the claim that p * 0.269. a. Identify the…

A: Test statistic z=2.55  H0: p=0.269  Ha: p≠0.269 we have to find a..Test is one tailed, two tailed…