he data represent the number of days off per year for a sample of individuals selected from different countries. Days Off 31 17 26 16 32 38 15 a. Find the variance of the number of days off. (Express your final answer in places

Q: Customers at IT Phone Call Center have been complaining that they are waiting too long for service.…

A: Given that Using excel  descriptive statistics

Q: Suppose a survey of adults and teens (ages 12-17) in a certain country was conducted to determine…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 7.54 In an effort to obtain maximum yield in a chemical reaction, the values of the following…

A:

Q: 4. Suppose that the modified duration for a bond selling for 989.80 $ is 7.6. What will be price if…

A: Given that, modified duration for a bond selling for 989.80 $ is 7.6.

Q: Given that μ = 235, o = 80, n = 64 Find 205 < x < 244

A: Given information: μ=235σ=80n=64x1=205x2=244

Q: FIND THE FF. 1. Q1 2. D5 3.P75

A: The following information has been computed from the given data: The total number of observations…

Q: Prorate the given expenses to find the monthly cost. Sarah takes courses on a quarter system.…

A: Solution Given, Sarah takes courses on a quarter system. Three times a year, she takes 15 credits at…

Q: Find the standard deviation for the given data. Round your answer to one more decimal place than the…

A:

Q: Evaluate 9!=

A:

Q: The accompanying data represent health care expenditures per capita (per person) as a percentage of…

A: Given data: Year Health care per capita Health care as a percentage of GDP 2007 7627 5.5 2008…

Q: Suppose 3% of items manufactured at a facility are defective. A random sample of 600 items are…

A:

Q: Find the following probabilities based on the standard normal variable Z. (You may find it useful to…

A: Let Z be the random variable from standard normal distribution with mean = 0 and standard deviation…

Q: Multiple-choice questions each have 3 possible answers, one of which is correct. Assume that you…

A:

Q: Willow Road and Arroyo Seco are schools in different states. The heights of students at Willow Road…

A: The following information has been given: The population mean of heights of students at Willow Road…

Q: B. Find the indicated measure. 1. D4= Class Intervals Frequency (f) 96-100 5 91-95 11 86-90 81-85…

A: According to the given information in this question  There are two questions according to bartleby…

Q: An experiment has been conducted for four treatments with seven blocks. Complete the following…

A: The following information has been provided: The number of treatments v=4. The number of blocks r=7.

Q: (s), graph(s) or chart(s), using at least two of the three grade levels (each on a different Excel…

A: 1. Academic achievement is impacted due to socio-economic gap This can be varied with respect to the…

Q: The daily total cost (y) in dollars for production of (x) items follows the SLR model: Y = 125 +…

A: Given Standard deviations=10

Q: aph 2. Statistical evidence: Appropriate table(s), graph(s) or chart(s), using at least two of the…

A: The literature indicates that the socioeconomic gap varies with respect to the subject, organization…

Q: Let X denote the amount of time a book on two-hour reserve is actually checked out, and suppose the…

A:

Q: Determine z for the following of a. (Round your answers to two decimal places.) USE SALT (a) α =…

A: We use standard normal z distribution table to find the solution.

Q: The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed…

A:

Q: I want to explain the

A: From the given plot, There are five treatments: control, 3dS, 6dS, 9dS and 12dS. In each treatment,…

Q: B. Find the indicated measure. 1. D4= Class Intervals Frequency (f) 96-100 5 91-95 11 86-90 81-85…

A:

Q: Mean Dry_weight 0.30- 0.20 0.10 0.00- control 3dS 6dS Treatment 9dS 12dS Cultivars 1.00 2.00 3.00…

A: From the first plot, There are five treatments: control, 3dS, 6dS, 9dS and 12dS. The graph…

Q: A regression line for a set of data is calculated and found to be y^​=85+12x. Use this to predict…

A:

Q: Given that μ = 81, o = 20, and n = 49 Find the Probability of the following: a) x 89

A: Given  μ=81, σ=20 , n=49 Given problems of parameter is normal distribution. X~N(μ=81, σ=20) Then…

Q: Let Z be a standard normal random variable and calculate the following probabilities, drawing…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: The average American consumes 93 liters of alcohol per year. Does the average college student…

A:

Q: The mean incubation time of fertilized eggs is 19 days. Suppose the incubation times are…

A: Suppose the incubation times are approximately normally distributed with a standard deviation of 1…

Q: Let X represent a binomial random variable with n = 200 and p = 0.77. Find the following…

A: Note: As per guidelines we are supposed to solve only first three sub parts. Kindly repost the other…

Q: Suppose that the interval between eruptions of a particular geyser can be modelled by an exponential…

A:

Q: Can you please write B up in writing as it is incorrect but I think it's because it's been converted…

A: f(x) = 3(x-1)^2, 0&lt;x&lt;1

Q: After looking at MLs, the researcher decides to look at the entire sample. In her analysis the…

A: We use the given output to find out the solution.

Q: The following data represent the speed at which a ball was hit (in miles per hour) and the distance…

A: Given that  Using excel regression

Q: It was found that 33% of all diners order vegan meals and that 90% of all diners are undergraduate…

A: The following information has been given: Let us consider "V" denotes the event diner orders a…

Q: please interpret

A: formula:      CI=x bar ± tα/2×s/√n

Q: -P He Let P(x) = and let p=5. Find P(5). P(5)= (Round to four decimal places as needed.)

A:

Q: The following table shows the distribution of murders by type of weapon for murder cases in a…

A: Given that

Q: 0.102. Conducts a p Assume that the proportion of voters who prefer candidate A is p of n = 5…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: A company manufactures printers and fax machines at plants located in Atlanta, Dallas, and Seattle.…

A: Solution: Given information: k= 3 groups or treatments  Each group has 6 observation n= 18 total…

Q: 24. Suppose you estimate the sample regression function violent crime = 7.23-4.87 Suburb +6.11…

A: As per the honor code, We’ll answer the first question since the exact one wasn’t specified. Please…

Q: Bryse is 46 years old. Based on a normal distribution with mean 52.8 years and standard deviation…

A: We assume the population is normally distributed.

Q: A female height of _______________ corresponds to the 47th percentile in the U.S. population.

A:

Q: 1. In order to improve the health care delivery system in a primary hospital, a systematic procedure…

A: Given that, Sample size = n = 115 Sample mean = x = 10.8 Sample standard deviation = 1.13

Q: The assumption, "The children who attend academic after-school programs have higher grades than…

A: Alternative hypothesis is one in which a difference between two or more variables is anticipated by…

Q: An important factor in solid missile fuel is the particle size distribution. Significant problems…

A: Introduction: It is required to verify that the given function f (x) is a valid probability density…

Q: Treatment N Mean Median Minimum control 60 1.1737 1.1600 .65 3dS 60 1.0043 .9600 .67 6dS 60 .9160…

A: Mean is the average measure of the observation. It is the type of measure of central tendency. It is…

Q: Find the standard score (round to two decimal places as needed.) z= Find the P-value (round to…

A: HERE FROM GIVEN INFORMATION, sample size n = 1014  sample proportion of teenagers feel that grades…

Q: 2. Reword the following statement using a confidence interval. In a recent survey, 40% of…

A: Given: Sample proportion p^ = 0.40 Margin of error E = 0.02   Formula Used: Confidence Interval = p^…