A sample of male and female students were equipped with a device that records sound for one day. Data about number of words spoken per day are presented below: Mean Standard Deviation Males (n=56) 16177 7520 Answer the following: 1. Upper Limit 2. Lower Limit Females (n=56) 16569 9108 Construct a 99% confidence interval for the difference in the mean number of words spoken by males and females. Assume the population variances to be unknown and unequal.

Q: Consider the five-number summary of hourly wages ($) for a sample of sales managers. Min: 20.94…

A: five number summary : Min: 20.94 Q1: 37.64 Median: 77 Q3: 49.34 Max: 67.11   IQR = ?

Q: For a fully discrete whole life insurance of b on (x), you are given: (i) 9+9= 0.02904 (ii) i=0.03…

A: Given::-

Q: There is a correlation between the number of lemons imported into the US and the number of highway…

A: Given: There is a correlation between the number of lemons imported into the US and the number of…

Q: You're surprised to learn that instead of ~$100, a 0.30 carat costs ~$800 carats. Which explanation…

A: Given statement: You are surprised to learn that a 0.30 carat costs $800 carats instead of $100.

Q: Consider the experiment of tossing a balanced coin thrice. What is the probability of getting at…

A: Let the experiment of tossing a balanced coin thrice.

Q: Find class boundaries, midpoint, and width for the class. 12.9 - 15.3

A: Given class is 12.9 - 15.3

Q: Your electric bill is $128. You are charged 12% simple interest for late payments. How much do you…

A: Solution-: Given: Amount of  electric bill is $128. Rate of simple interest =12% . How much do you…

Q: Use the CDF to compute for the following probabilities: 18. P(Y ≤ -1.6) 19. P(Y ≥ 0.75) 20. P(Y >…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so i am solving…

Q: Out of 100 people sampled, 40 had kids. Based on this, construct a 99% confidence interval for the…

A: From given data we have : x=40 n=100 thus, p^=xn  =40100  =0.4

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 5.4 inches,…

A: From the provided information, Mean (µ) = 5.4 Standard deviation (σ) = 1.5

Q: A particular fruit's weights are normally distributed, with a mean of 649 grams and a standard…

A: Given that: Population mean, μ=649 Population standard deviation, σ=28

Q: In a student survey, forty-one part-time students were asked how many courses they were taking this…

A: given data sample size (n) = 41 # of courses frequency relative frequency cumulative frequency…

Q: If, in a sample of n=16 selected from a normal population, X=56 and S=12, what is your statistical…

A: From the provided information, Sample size (n) = 16 Sample mean (x̄) = 56 Sample standard deviation…

Q: An SMR over 100% ( i.e.,171 %) indicates that the "healthy worker effect" may be an issue in the…

A: Given::- An SMR over 100% (i.e., 171%) indicates that the "healthy worker effect" may be an issue in…

Q: Find the 94th percentile, P94, from the following data 10.6 11 14.4 18.9 20.3 22.5 24.1 27.1 28.4…

A: Arranging Observations in the ascending order, We get…

Q: 12. Suppose that the random variable X has 4 mass points. Give the value of c such that the…

A: As per our guidelines we are suppose to answer only one question kindly post the remaining questions…

Q: A computer company advertises its computers in PC World, in PC Magazine, and on television. A survey…

A: 306, PC World230, PC Magazine370, television120, PC World and PC Magazine134, PC Magazine and…

Q: Population Growth in Central and Eastern European Cities City Berlin Vienna Kiev Budapest Istanbul…

A: Population     City  1870 1910 1950 1989 Berlin 826000 2071000 3337000 3353000 Vienna…

Q: In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this…

A: Given that  Sample size n =110 Favorable cases x =91 Sample proportion p^=x/n  =91/110 =0.8273…

Q: 11. The standard normal distribution is shown below with the shaded area between z- values -1.96 and…

A: given data standard normal distribution Z~N(0,1) shaded area : between z = -1.96 and z = 1.96

Q: Here is the recommended dosage chart for milliliters of Ibuprofen, a medicine for pain and fever…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Current Attempt in Progress Information about the proportion of a sample that agrees with a certain…

A: From given we have ; x=35 n=100 The proportion of sample  p^=xn=35100=0.35

Q: If X and Y are independent random variables with E(X) = 2, E(Y) = 2, Var(X) = 3, and Var(Y) = 1,…

A:

Q: Construct the associated probability distribution (with probabilities rounded to four decimal…

A: Given data: Age 0-18 18-25 25-35 35-45 45-55 55-65 65-75 75 and over Total Number 37.6 13.5…

Q: ppose that the results of a survey show that 38% of people consider summer as their favorite season.…

A: Given, Suppose that the results of a survey show that 38% of people consider summer as their…

Q: Explain how a court trial is like hypothesis testing.   Write the hypotheses, explain a Type 1 and…

A: Explain how a court trial is like hypothesis testing.   Write the hypotheses, explain a Type 1 and…

Q: A particular fruit's weights are normally distributed, with a mean of 454 grams and a standard…

A:

Q: Assume that a sample is used to estimate a population mean μ. Find the 99% confidence interval for a…

A: Formula to calculate  confidence  interval : M +/- z(√s^(2)/n) Given information  :  z at 99%…

Q: A random number generator picks a number from 5 to 53 in a uniform manner. Round answers te decimal…

A: given data uniform distributionx~U(5,53)

Q: Would you please help with this follow-up question too? Thank you    “We have (i) (no / weak /…

A: Please find the explanation below. Thank you.

Q: 100 fingerlings were released in a pond in 2005. By 2012, there were 324 fishesin the pond. The pond…

A: The logistic growth model for the population for a given period t is given as: Pt=L1+Ae-ktwhere,…

Q: QL which of the following policy helders is Least Likely to have their INS Contracts Cancelled after…

A: Given::- which of the following policy holders is Least Likely to have then INS Contracts Cancelled…

Q: If X∼ Normal(5,25), then P(X=5)=__

A: given data normal distribution X~N(5,25) P(x=5) = ?

Q: 3 Suppose Z = N (0,1) and Y= ez Find E(Y)

A: Solution

Q: An experiment in randomized complete block design with four replications was conducted to compare…

A: The randomized complete block design is applied was conducted The study is on comparing the average…

Q: How many of the surveyed customers know about the computers because of EXACTLY ONE of these forms of…

A:

Q: A researcher studied the relationship between family income and the amount of moneyspent on an auto…

A: Solution-:  A researcher studied the relationship between family income and the amount of money…

Q: No Stats Stats Total Publication Year 1978-79 1989 2004-05 Total 90 14 40 144 242 101 271 614 332…

A: Given that    1978-79 1989 2004-05 total  No Stats  90 14 40 144 Stats  242 101 271 614…

Q: Problem 4: Mrs. Cunan introduced a Gallery Walk Technique in her Science class. He gave a pretest…

A: Given data: Student Pretest (x1) Posttest (x2) 1 10 15 2 30 35 3 15…

Q: will result in an increase in the length of the interval estimate. A. True B. False 2. The unbiased…

A: Given::- Using the same sample data, increasing the confidence coefficient in interval estimation…

Q: Let X and Y are independent Poisson random variables such that E(X) = E(Y)=2. Let Z=X+Y

A: From the given information, X and Y are independent Poisson random variables with E(X)=E(Y)=2. That…

Q: If Z is a standard normal random variable and P(−zy < Z < zy) = 0.99 then,

A: by bartleby policy i can gives only one question answer at a time

Q: The formula for a z-score is = *-* True or False True False

A: Z-score is indication for a value by showing that how much that value differs from the standard…

Q: Hard times in June 2010, a random poll 800 working men found that 9% had taking on a second job to…

A: given data sample size (n) =800p^ = 0.0995% ci p.

Q: Question Derive the distribution of the mean of a random sam- ple of size n (where n > 30), when the…

A: Given that the population is normally distributed with mean μ and variance σ2. So, X~Nμ,σ2. Let X1,…

Q: 6. The experimental design used is A. Two-factor factorial in Split-plot in CRD B. Two-factor…

A: Design of experiments

Q: For Numbers 12 and 13: A particular concentration of a chemical in polluted water has been found to…

A: 12. The hypothesized probability distribution is, X~Bn=5, p=0.2 The PMF for X is, PX=x=nxpx1-pn-x…

Q: 2. Remote County has Math test scores from 30 of their fifth graders (just before Easter). To test…

A: Givensample size(n)=30significance level(α)=0.05claim is that the scores are lower than the average…

Q: The following data represent exam scores in a statistics class taught using traditional lecture and…

A: Here we have to find the rang for traditional course and  flipped course Range is given by : Range =…

Q: A graduate student wanted to determine whether the yield (ton/ha) for 3 different varieties of oats,…

A: Anova is used to measure the mean significance between three or more groups. It is the type of…