A study of working actors looked at age and gender. One sample of 70 male actors had a mean age of 29 and a standard deviation of 5. The other sample included 70 female actors with a mean age of 37 and a standard deviation of 4. Estimate with 98% confidence the difference between the average ages of working male (μ1μ1) and female (μ2μ2) actors. Round answers to the nearest hundredth. < μ1−μ2μ1-μ2 <

Q: Express the confidence interval 56%±6.6%56%±6.6% in the form of a trilinear inequality. _______% <p...

A: Solution-: We have the C.I.  is  56±6.6 We express it in the form of a trilinear inequality.

Q: 3. A StatCrunch poll asked people if college was worth the financial investment. They also asked the...

A: Given data;   Female Male Total No 45 56 101 Unsure 100 96 196 Yes 577 401 978 Total 722 ...

Q: population battery approxima a. 0.34 < o? < 4.59. Because 95% confidence interval for o? is (0.34, 4...

A: given data : 1.9,2.4,3.0,3.5,4.2 from the above given data sample size,n= 5 ...

Q: In Table 5 of Unit 3, data were given on the month of death (January = 1, February = 2, ..., Decembe...

A: Chi-square goodness of fit          The Chi-square goodness of fit test is a statistical hypothesis ...

Q: A data set includes 105 body temperatures of healthy adult humans having a mean of 98.7°F and a stan...

A: Given X-bar=98.7 S=0.64 n=105

Q: A poll reported that 32% of 180 Canadians between the ages of 25 and 29 had started saving money for...

A: From the provided information,

Q: Ho:µ = µo is a two-tailed hypothesis test O True O False

A: Given,H0:μ=μ0

Q: The student council is hosting a drawing to raise money for scholarships. They are selling tickets f...

A:

Q: Defective alternator and corroded or loose battery charges are a few of the main causes of battery d...

A: Confidence interval: The (1-α) % confidence interval for population variance is given by:

Q: A CNC (computer numerical control) machine produces iron automobile crankshafts. Samples are measure...

A: sample mean 'x̄=   1.0056 sample size    n=   9 std deviation s=   0.0246 std error ='sx=s/√n=...

Q: and that they claim their batteries will last on average, 3 years with a variance of 1 year. A rando...

A: given data : 1.9,2.4,3.0,3.5,4.2 from the above given data sample size,n= 5 ...

Q: The amount that households pay service providers for access to the Internet varies quite a bit, but ...

A: We have given that  We have given that.   X~N( μ , ?^2 )   μ =48 , ? =20 , n=500    

Q: Which of the following is a continuous quantitative variable? A Number of patients in a ward B Books...

A:

Q: 13. If byy and b, YX XY y are both positive, then : (A) (1/byx) YX + (1/bxy) < (2/r) XY)

A:

Q: H1: µ > Ho is an upper-tailed hypothesis test O True False

A: According to guidelines we solve only first question when given questions are different.

Q: Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval...

A: Given that n =227 ,x =129 Find  the 95% confidence interval  ? &lt; p &lt; ?

Q: A survey of B2B marketers (marketers that focus primarily on attracting businesses) and B2C marketer...

A: General formula of probability is , Probability =Number of favorable outcomesTotal outcomes  

Q: As a study being conducted by the state's Land Transportation Bureau, a random sample of 150 SUV own...

A:

Q: The prediction interval for Xn+1 will always be longer than the confidence interval for u True False

A: Prediction intervals must account for both the uncertainty in estimating the population mean, plus t...

Q: For the two missing blanks my answers were 148.55 and 159.05 but there were wrong what is the

A: Given

Q: SE Mean a. b. c.

A: here as per guidelines i have calculated 3 subparts  plz repost for remaining HERE USE GIVEN table  ...

Q: 2, 10, 13, 14, 18, 23, 26, 27, 33, 39, 44, 45, 47, 53, 60, 61, 71, 72, 78, 86, 103, 103, 106, 114, 1...

A: Solution-: Create a frequency distribution table of following data: 2, 10, 13, 14, 18, 23, 26, 27, 3...

Q: Which of the following data falls under interval scale of measurement? A Weight in pounds B Intellig...

A: Interval scale of measurement is used for quantitative data where the difference between two observa...

Q: Calculate relative frequency for the data below?

A: We have given that the data into tabulated form:                 Weights(in lbs)   Frequen...

Q: In a certain state's lottery, 25 balls numbered 1 through 25 are placed in a machine and 5 of them a...

A: Given n=25 r=5

Q: One-Sample Z: Test of u = 35 vs not = 35 The assumed standard deviation = 1.8 Variable N Мean StDev ...

A: For the given data perform One sample Z select the correct choices

Q: a) Carefully define the null and alternative hypotheses of the χ2 test underlying the generation of ...

A:

Q: please show work to understand :)   A gambler is going to play a gambling game. In each game, the ...

A: Given information: A gambler is going to play a gambling game. In each game, the chance of winning $...

Q: For a hypothesis test, significance level, alpha, = 0.05 The computed P-Value = 0.067 Should the n...

A: For a hypothesis test, significance level, alpha, = 0.05   The computed P-Value = 0.067   Should the...

Q: How many 4-digit numbers greater than 5000 can be formed from the digits 2, 4, 5, 7, 8, and 0? Assum...

A: How many 4-digit numbers greater than 5000 can be formed from the digits 2, 4, 5, 7, 8, and 0? Assum...

Q: Consider the following frequency table of 50 observations on the random variable X: Value 1 2 3 or m...

A: Given the, Frequency table of 50 observations on random variable X with significance level 0.05 and ...

Q: Let X represent the full height of a certain species of tree. Assume that X has a normal probability...

A:  

Q: Which statement is correct. A one-sided hypothesis test produces a P-value of 0.0.036. O A. If we as...

A:  Introduction P-value: A p-value is a likelihood or percentage of getting outcomes at least as extre...

Q: Assume the random variable X is normally distributed with mean p = 50 and standard deviation o = 7. ...

A:

Q: The value of a should reflect the consequences of incorrectly rejecting H, if it is true True False

A: Given that  Level of significance (α)    We know that  Type I error : Rejecting the null hypothesis ...

Q: Confidence intervals on the variance is very sensitive on the normality of the data while the confid...

A: Here use basic for confidence interval of variance 

Q: Failing to reject Ho does not necessarily mean that there is a high probability that Ho is true. It ...

A:

Q: a. Find the probability of randomly selecting a student who spent the​ money, given that the student...

A:

Q: A statistical program is recommended. Consider the following data for two variables, x and y. x 22 2...

A: To obtain linear regression R-software is used.  

Q: Question 1: State the parameter of interest Question 2: Formulate the null and alternative hypothesi...

A: here as per guidelines i have calculated  3 subparts here given, observed and expected value table f...

Q: Problem 2 A card is drawn at random from a pack of cards. Calculate: (a) P(heart|card from red suit ...

A: There are 52 card in the deck in which they divided into two color i.e red(26) and black (26). These...

Q: If the students want the error to be less than 0.05, how large a sample size would be required at 95...

A: The confidence interval gives us a range of values and it is used for multiple purposes.

Q: and waterways and the average nitrogen content is found to be in 2.6 grams per milliliter. Find the ...

A: Given : Sample Size , n= 36 Sample Mean , x̄ =2.6 population standard deviation , ...

Q: 6) The following results are from data that were collected from the appraisal of houses based on a n...

A: Using given summary tables, we have to test the whether the groups ROOMS, BATHS and GARAGE are signi...

Q: How many ways are there to choose 3 applicants from 8 job-seekers for high-paying positions in an en...

A: Given information- We have given that in an engineering company 3 positions are there and 8 job-seek...

Q: The probabilities that Chris and Arnold will pass the audition for the lead roles in Miss Saigon are...

A: We have given that  P(Chris pass the audition for the lead roles in mess saigon)=P(A)=2/3 P(Arnold p...

Q: Students on an internship program in the US Fish and Wildlife Service wishes to test the nitrogen co...

A: From the given information we find the solution.

Q: CI for a Population Proportion Research in third party aircraft maintenance department reported the ...

A: From the given information we find the solution.

Q: Executives at The Thinking Channel have decided to test whether the educational backgrounds of the c...

A: For the given data Perform chi square goodness of fit

Q: Based on the 50 observations, is a binomial distribution an appropriate model? Perform a goodness-of...

A: Here use given table of expected and observed frequency