2. A random sample of 85 group leaders, supervisors, and similar personal revealed that a person spent an average 6.5 years on the job before being promoted. The population standard deviation was 1.7 years. Construct a 95% confidence interval estimate for the population mean.

Q: A study is made to determine if a cold climate contributes more to absenteeism from school during…

A: Let n1 be the number of students from Baguio  x1 be the number of students absent atleast one day…

Q: Find the a probability distribution function of Y() = max(Y₁; Y2; b density function of y(n). c mean…

A:

Q: tY₁, Y2, Y3, Y, Y, be a random sample of size 5 from a standard normal population. Fine coment…

A: Data given Yi ~N(0,1)  ; i=1,2,..,5  Mean=0, variance=1  Random sample.

Q: Find the lower boundary of the 90% confidence interval for the variance of the ages of seniors at…

A: Given information: n=24 s=2.04 Confidence interval for variance: n-1s2χ1-α2,n-12≤σ2≤n-1s2χα2,n-12

Q: (Multiple choice) Which of the following statements correctly describes the difference between…

A: Here we are given 4 statements and we have to which of them correctly describes difference between…

Q: The shape of a given population distribution is normal with a mean of u = 85 and a standard…

A: Answer: from the given data, Mean μ = 85 Standard deviation σ = 6.5 The distribution is normal

Q: The test statistic of z= -1.77 is obtained when testing the claim that p *0.619. This is a…

A: Given Test statistic Z=-1.77,  Hypothesis Ho: p=0.619 vs H1: p≠0.619 (claim) two tailed  Level of…

Q: 1 For each series below, decide whether it is arithmetic or geometric, then find the sum. a 5 15 15…

A: We have given that 1/5 + 8/15 +13/15 + ... S7 Let here a1 = 1/5, a2 = 8/15, a3 = 13/15

Q: You wish to investigate factors that could affect cooking noodles. a. What would you use as a…

A: Factors that could affect cooking noodles :  Response variable and source of variability and steps…

Q: A population grows according to an exponential growth model. The initial population is Po = 14, and…

A: given data initial population p0= 14growth rate r = 0.35

Q: 1)Stacy owns all thirteen books in the A Series of Unfortunate Events series. In how many different…

A: Given that  Stacy owns all thirteen books in the A Series of Unfortunate Events series. Note :…

Q: d. What percent of the students spent no more than 40 minutes on social media? 0% Round to two…

A:

Q: A. Identify the actual number of respondents who ted them selves above average drivers. B Identify…

A:

Q: 5- Show that 2 (X(-X)² n is a biased estimator of population variance (²)? Show that it is a…

A: The population variance is σ2. Given that, σ^2=∑i=1nXi-X2n Also, s2=∑i=1nXi-X2n-1

Q: 1. A shipment of 7 television sets contains 2 defective sets. A hotel makes a random purchase of 3…

A: Given that  Total television sets = n = 7  Defective television sets = 2 Randomly purchased of 3 of…

Q: with If weekly accidents at certain crossing follows Poisson distribution parameter 1 = 4, if we…

A:

Q: The standard deviation of a distribution is hypothesized to be 50. If an observed sample of 16…

A:

Q: When you read an article quoting sampling research do you consider the lack of sufficient…

A: Sampling : In a research or a survey, some units are drawn from the population in which an…

Q: Given that a stock increased in price, what is the probability that it also paid dividends?

A: It is given that Number of stocks increased in price and paid dividend = 40 Number of stocks…

Q: Year Population 2010 20,531 Population of Barangay X 2011 2012 2013 2014 21,935 23,436 25,034 26,751…

A: Data is given for population according to years We have to calculate function which define…

Q: Let X be a random variable defined by the density function COS 10 (1) 8 0, fx(x) = {16 x, -4≤x≤4…

A:

Q: 5. A random sample of 100 runners who completed the 2012 Cherry Blossom 10 mile run yielded an…

A: It is given that  Sample average, x̅ = 95 Sample size, n = 100 95% confidence interval = ( 92, 98 )

Q: On a certain transatlantic route, an airplane charges $2050 for a first class ticket, $1450 for a…

A: a) Suppose c1 and X1 are the cost of a ticket in first class flight and the number of passengers in…

Q: Find the outliers in the following data set: 3, -5,2,2, 13.5, 6, 3,7. Find (a) Q₁-(1.5)(1QR) = (b)…

A:

Q: Find the probability distribution for the number of spades.

A: We know that There are 52 cards in the deck divided into two colour i.e red(26) and black (26).…

Q: 1. Let Y₁, Y2, Y3, Y4, Ys be a random sample of size 5 from a standard normal population. Find the…

A: Given Yi~ standard normal distribution ; i=1,2,3,4,5  Y1,Y2,..Y5 are random sample  Which means…

Q: A truth serum has the property that 93% of the guilty suspects are properly judged while, of course,…

A: Given that We have to find the probability that the suspect is innocent is

Q: a. Assume that is known about the percentage of passengers who prefer alsie seats. n= (Round up to…

A: given data 90% ci E =0.015n= ? α = 1-0.90 = 0.10Zα2 = Z0.05 = 1.645   [from excel function…

Q: Four hundred consumers were surveyed about a new brand of snack food, Crunchicles. Their age groups…

A: Given data is    18-24 25-34 35-55 55 and over Total Liked crunchicles 4 17 9 105 135…

Q: i) Find C. Scanned with CamScanner ii) Find P≤X<- 2 —

A: It is given that a random variable X with pdf fX(x) = { Cx(1-x),   0≤x≤1                   0,…

Q: The data given to the right includes data from 39 candies, and 10 of them are red. The company that…

A: Given information: There are 39 candies and 10 are red. Let x=10 and n=39 sample proportion,…

Q: The claim is that for 8 AM body temperatures of males, the mean is less than 98.6°F. The sample size…

A: given data claim:μ&lt;98.6°fn=36, df=n-1=35t=-3.675α=0.01

Q: 3.32 A pair of fair dice is tossed. Define the following events: A: B: {You will roll a 7.} (i.e.,…

A:

Q: 00 0.37 _00 3.20 _15 0.57 -87 1.98 .84 0.995 0.36 2.00 2.00 3.51 2.00 1.70 0.64 0.80 1.78 2.70 0.44…

A: The data is as follows 0.425 1.339 0.6 0.17 0.45 1.53 2.52 2 0.37 0.36 1.7 0.44 0.62 0.6 2…

Q: What is the P(E and F)​?

A: It is given that the two events E and F are independent. P( E ) = 0.6 P( F ) = 0.7

Q: In an experiment, 10 trials were done to determine the range of a trajectory. The measurements for…

A: The question is about measures Given :   To find : 1 ) Mean 2 ) Variance  3 ) Std. deviation

Q: The test statistic of z = 1.24 is obtained when testing the claim that p#0.453. a. Identify the…

A:

Q: Malik currently has 39 tulips in his yard. Each year he plants 3 more. (a) Which of the following is…

A: given data  malik havs 39 tulips in his yard each year he plants 3 more  so,  p0= 39 d = 3

Q: The amount of time (minutes) a sample of students spent on online social media in a 4-hour window is…

A: From given data : Given the amount of time (minutes) a sample of students spent on online social…

Q: P(E)=enter your response here ​(Type an integer or a decimal. Do not​ round.)

A:

Q: As the standard deviation increases A) The scores in the data set will become more different than…

A: We have to Given in above question, Standard deviations increases

Q: Which term of the arithmetic sequence 1, 9, 17, 25, It is the th term. Calculator ... is 297?

A: Given that  First term = a1 = 1 , Second term = a2 = 9 nth term = an = 297

Q: The required sample size is (Round up to the nearest whole number as needed.) Does the sample size…

A:

Q: The Great Britain of Population Census and Surveys ted data on a random sample of 170 married…

A: Solution: Given information: n=170 observation

Q: Answer the following questions about the boxplot shown in the figure. (a) How many outliers are…

A: Given that box plot diagram

Q: An investment analyst collects data on stocks and notes whether or not dividend were paid and…

A: Given that Data are presented in the following table:   Price increas yes Price increase no total…

Q: Let Y₁, Y2, Y3, Y4, Y5 be a random sample of size 5 from a standard normal population. Find the…

A: Solution

Q: (3) Look at the boxplot below, which shows data for the selling price of homes in a certain…

A: Given that Using the given Box Plot we have to find   a.. What was the typical selling price?  b.…

Q: a. How many students received a "D"? students E b. If a "C" or better is required to take Statistics…

A: From given data we have : Total Number of students = 200

Q: believed that 25.35% of U.S. homes have a direct satellite television receiver. How large a sample…

A: Given that  p = 25.35% = 0.2535 , E = 3.19% = 0.0319 99% confidence