If X is normally distributed with a mean of 157 and a standard deviation of 2.45. If you take a sample of size 385, what is the mean of the sampling distribution? Write your answer correct to 4 decimal places.

Q: Determine the P-value for a one sided test with t = 1.75 and n=16 O a. 0.075 Ob. 0.05 O c 0.0375

A: we will find the p value from t table for one tailed test.

Q: Nationally, patients who go to the emergency room wait an average of 4 hours to be admitted into the…

A: From the provided information, Sample size (n) = 14 Sample mean (x̄) = 4.5 Standard deviation (s) =…

Q: CHOOSE THE LETTER OF THE CORRECT ANSWER (PLEASE ANSWER EVERYTHING AND NO NEED FOR AN EXPLANATION)…

A: Note: As per guidelines we will only answer the first three subparts, please repost other subparts…

Q: Explain how you will use Paired Sample t-test in any research with a suitable example.

A: Paired sample t-test The paired sample t-test, sometimes called the dependent sample t-test, maybe a…

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A:

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Q: From a large number of actuarial exam scores, a random sample of  275  scores is selected, and it…

A: Given that  Sample size n =275 Favorable cases x =187 Sample proportion p^=x/n  =187/275 =0.68

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A: Given that  Sample size n =62 Favorable cases x =33 Sample proportion p^=x/n  =33/62 =0.5323 NOTE:-…

Q: For the discrete series given as, X variable values - 32 with frequemcy 2, 37 with frequency 5, 46…

A:

Q: Suppose that the index model for stocks A and B is estimated from excess returns with the following…

A: Please find the explanation below. Thank you

Q: What is the null hypothesis H0 and the alternative hypothesis H1?

A: Here p=76%              =76/100            =0.76 So null and alternative hypothesis is  Null…

Q: Giving a test to a group of students, the grades and genders are summarized below.   A B C Total…

A: Given data is   A B C Total Male 11 2 15 28 Female 18 3 10 31 Total 29 3 25 59

Q: Use Excel to find the z-score for which the area to its left is 0.52. Round the answer to two…

A: Given Z score is 0.52

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A: Given: Mean,u= 113 standard deviation σ= 11

Q: a. Determine the sample proportions. Determine the sample proportion P₁. P₁ = [ Determine the sample…

A: Followings are the Explanation of the question  Use the Two sample Z proportion test

Q: just about everything there is to research about weddings. The popular conception at the magazine…

A: Given Information: 50% of first weddings take place indoors in a church 30% take place indoors in a…

Q: uestion 3

A: Given: 96 99 90 56 71 94 86 71 64 91 84 68 88 73 81 73 65 57…

Q: An electronic device has lifetime denoted by T. The device has value V = 5 if it fails before time t…

A:

Q: The safety commissioner in a large city wants to estimate the proportion of buildings in the city…

A: The following information has been given: The sample size is n=40. The favorable cases are x=4.

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

A: Given data is as follows:   Percent of population,p Observed, Fo Less than high school 0.12 19…

Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 10…

A: From the provided information, Sample size (n) = 15 Level of significance (α) = 0.10

Q: A random variable follows the continuous uniform distribution between 20 and 120. a. Calculate the…

A:

Q: The calculations for a factorial experiment involving four levels of factor A, three levels of…

A: Given information: SST=275 SSA=24 SSB=21 SSAB=175 SSE=SST-SSA-SSB-SSAB=275-24-21-175=55 There are 4…

Q: A. Find the value of the test statistic. (Round your answer to two or more decimal places.) B. Find…

A: Given:

Q: Assume that a sample is used to estimate a population mean . Find the 95% confidence interval for a…

A: Given datan=293mean=42.5standard deviation=7.8confidence interval=95%

Q: seniors have a driver's license. Suppose we tak seniors and find the proportion who have a dri a.…

A: Hi! Thank you for the question, As per the honour code, we are allowed to answer three sub-parts at…

Q: A random sample of 149 full-grown lobsters had a mean weight of 15 ounces. Assume that population…

A:

Q: While her husband spent 2½ hours picking out new speakers, a statistician decided to determine…

A: The complete solution and result is in images uploaded below. Thanks!

Q: s according to the Mars candy company can be found in the table below. In addition, the table…

A: blue brown green orange red yellow Total Observed Frequencies 474 379 489 550 363 359 2614…

Q: Three (3) treatments were compared using a completely randomized design. The data are shown below.…

A:

Q: 7.39 Variation in Sample Proportions (Example 70) Suppose it is known that 20% of students at a…

A: 7.39 Given: Suppose it is known that 20% of students at a certain college participate in a textbook…

Q: A manufacturing company designed a Factorial Experiment to determine whether the number of defective…

A: Hypothesis for interaction effect in factorial designs  H0: There is no intercation between the…

Q: In laparoscopic surgery, a video camera and several thin instruments are inserted into the patient's…

A: Given the data as Never played Under 3 hours 3 or more hours 9379 5540 7288 8302 6259 4010…

Q: 2. Cholesterol: An article in the Archives of Internal Medicine reported that in a sample of 244…

A: From the provided information,

Q: A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults,…

A: Given that    Better Same Worse Republican 38 104 44 Democrat 12 87 137 None 21 90 218…

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 15 X~N (100, 15)

Q: 57% of students entering four-year colleges receive a degree within six years. Is this percent…

A:

Q: Each bit transmitted through a channel has a 10% chance to be transmitted in error. Assume that the…

A: Dear student, If you find this solution helpful please upvote ? it. If X~Bin(n,p) Then, P(X=x) =…

Q: Identify the population and the sample. Describe the sample data set. A survey of 170 law firms in a…

A: Given dataA survey of 170 law firms in a country found that the average hourlybilling rate for…

Q: College tuition: A simple random sample of 40 colleges and universities in the United States has a…

A: Sample size (n) = 40Sample mean (x̅) = 19200Standard deviations (s) = 10800Significance level (α) =…

Q: In a poll, 1100 adults in a region were asked about their online vs. in-store clothes shopping. One…

A: Givensample size(n)=1100p^=0.37confidence interval=95%

Q: A portion of the cumulative normal table (z table) is reproduced below. What is P(-2.94 ≤ z ≤ -2.70)

A: GivenP(-2.94≤z≤-2.70)

Q: The following MINITAB output display presents a 98% confidence interval for the difference between…

A: From the provided information,

Q: Find the value of the test statistic. (Round your answer to two or more decimal places.) B. Find…

A: Data is given for observed frequency and expected frequency. Test statistic is the value of…

Q: College bound: A national college researcher reported that 68% of students who graduated from high…

A: From the provided information, A national college researcher reported that 68% of students who…

Q: Let X₁, X2, X3, X4, X5 be an independent and identically random variables following a Binomial…

A: Dear student, According to Bartleby guidelines we can answer only first 3 subparts at once. If you…

Q: CHOOSE THE LETTER OF THE CORRECT ANSWER AND NO NEED FOR AN EXPLANATION.   1. Of the below…

A: Given that  We have to choose correct option:    1..Of the below non-parametric tests, which relies…

Q: Test the claim that the proportion of men who own cats is significantly different than 20% at the…

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Q: Perhaps the difference in weight gain between the two groups was affected by a difference in food…

A: Given information: Condition BMGain Corticosterone DayPct Consumption GlucoseInt GTT15 GTT120…

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: Steps to perform one – way ANOVA in Excel 2013 STEP – 1.                 Input your data into…