A study indicates that 67% of students have have a laptop. You randomly sample 7 students. Find the probability that more than 5 have a laptop. Enter your answer as an equation or as a number rounded to 4 decimal places.

Q: Let X be a random variable with probability density function (PDF) given by, find E(e²) fx(x): = et…

A: Given,PDF of a random variable X is,fX(x)=exx<00otherwise

Q: In a sample of n=20 what would be the student's  t test statistic for a correlation of r=0.400?

A: The question is about testing of correlation Given : Sample size ( n ) = 20 Correlation coeffi. ( r…

Q: You are testing the claim that the mean GPA of night students is different from the mean GPA of day…

A: Answer  Mean [x1] =2.44 Mean [x2] =2.21 Standard deviation [s1] =0.33 Standard deviation [s2] =0.45…

Q: The age of wine can be determined by measuring the trace amount of radioactive tritium, ³H, present…

A:

Q: The director of admissions at Pentagon College administered a newly designed entrance test to 20…

A: Given information: n=20∑Xi=100∑Xi2=509.12SSE=3.41Regression equation, yi⏞=-1.70+0.48XiMean, x¯=5

Q: Suppose that the recovery time from the infection with a certain virus is normally distributed with…

A: Note: Hi! Thank you for the question, As per the honor code, we are allowed to answer three…

Q: 2. Find the critical value (or values) for each set of conditions. a. a = 0.1, left-tailed test,…

A: we have to find out the critical value for the given data, here we use excel function for find out…

Q: A regression was performed using data on 32 NFL teams. The variables were Y = current value of team…

A: from given : Variables Coefficients Standard Error Intercept 557.4511 25.3385…

Q: 20 29 4 30 38 1 Maximum: T 40 First quartile: T 50 55 1 T 68 T 70 73 80 T 90 98 T 100

A: A box and whisker plot is a graphical representation that represents the distribution of data. It…

Q: The mean ACT composite score in a recent year is 20.8. A random sample of 36 ACT composite scores is…

A:

Q: in asking all 349 second graders in a district, it is found that on average, these second grders…

A: The question is about parametric inference Introduction : Parameter : The quantity or number which…

Q: Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and…

A: given data, standard normal curve:X~N(0,1)μ=0σ=1

Q: The following table describes the results of roadworthiness tests of Ford Focus cars that are three…

A: x P(x) 0 0.377 1 0.399 2 0.176 3 0.041 4 0.005 5 0+ 6 0+

Q: The marketing manager wants to estimate the effect of the MBA program on Salary controlling for the…

A:

Q: Express the confidence interval 30.1%<p<41.5% in the form of p+_E

A: given data, confidence interval 30.1%&lt;p&lt;41.5%p±E=?

Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A: Given information- Obtain the 85% confidence interval for the population proportion of Americans…

Q: n a population-based cohort study, an entire community was interviewed regarding smoking habits and…

A: Given that:   Number of Individuals Lung Cancer Deaths Smokers 24500 15 Non-smokers 10500 2

Q: In a recent year, an author wrote 194 checks. Use the Poisson distribution to find the probability…

A:

Q: The death rate per 100,000 for coronary thrombosis is 422 among nonsmokers and 599 among smokers.…

A:

Q: tion of 2.63 inches. The heights of adult women in America are also normally distributed, but with a…

A: For standard normal random variable, For American men: Mean (µ) = 69.2 inches Standard deviation (σ)…

Q: Question 4 Multi-Server Queue A supermarket manager is trying to decide how many cashers to employ…

A: The utilization of a server is defined as the fraction of time the server is busy serving customers.…

Q: A box contains 4 red balls, 3 green balls, and 5 blue balls. If 2 balls are drawn at random without…

A:

Q: Suppose the amount of time it takes a student to complete a multiple-choice exam with 50 questions…

A: Given that.   X~N( μ , ?)   μ=60 , ?=10   Z-score =( x - μ )/?

Q: Given the binomial distribution, X~ B(10, 0.4) X = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. P(X= k) =…

A: Given  The binomial distribution X~B (10,0.4) 1, X = {1,2,3,4,5,6,7,8,9,10} 2 P(X=K)…

Q: Find the class boundaries. Class limits Class boundaries 0.5-11.4 11.5-22.4 22.5-33.4 33.5-44.4…

A: Class boundaries :  If the difference between ( upper limit of one class and lower limit of second…

Q: 2. A researcher claims that at least 10% of all football helmets have manufacturing flaws that could…

A: Given that  A researcher claims that at least 10% of all football helmets have manufacturing flaws…

Q: A die is tossed once. What is the probability that it will be 4 or divisible by 2

A: A die is tossed once. sample space:{1,2,3,4,5,6}total outcomes=6 outcomes probability that it will…

Q: Determine whether the given procedure results in a binomial distribution. If not, state the reason…

A: Answer:-  Let , X be a random variable defines the number of times five occurred. The number of…

Q: Meredith Grey has asked every surgeon at Grey-Sloan Memorial Hospital the following question: "How…

A: Solution:  The observation in increasing order is 30, 40, 50, 50,50,  55, 55, 55, 60, 65, 70, 70,…

Q: Suppose the number of hours that people spend watching TV each day follows a Poisson distribution…

A: Let  X is the random variable representing the number of hours spent watching TV each…

Q: The death rate per 100,000 for lung cancer is 7 among nonsmokers and 71 among smokers. The…

A: Given information- We have given that the death rate per 100,000 for lung cancer is 7 among…

Q: What kind of effects are reported in the tables for Tobit (are these marginal effects or not?).…

A: In the given table, the Tobit regression estimates the likelihood of remitting and the monthly…

Q: S5: Key Terms in Statistics The writer's guild only gives a lifetime achievement award out every 5…

A: The interest of the study is how the population in Europe felf about the process of the lifetime…

Q: Answer for Question 2, Parts A, B, and C.

A: 2) Given The data is as follows: Time on Social Networking Sites (hours) Time spent studying for…

Q: The Standard Normal variable, Z~ N(0,1). Which of these statements is incorrect? A. Pr(z > 1) =…

A: A. The z-score is 1.

Q: The professor of a introductory calculus class has stated that, historically, the distribution of…

A: X is a random variable that follows the normal distribution with mean  μ and SD σ then the z score…

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

A: Given that.   X~N( μ , ?)   μ=100 , ?=15   Z-score =( x - μ )/?

Q: (a) What are the mean and standard deviation of the sampling distribution of X? Describe the shape…

A: Given sample size (n) = 64, μ=80 and σ=10 Answers for (b) and (c) were rounded to 3 as well as 4…

Q: Could the explanation of how each cardinality set is determined be described?

A: Cardinality :  It is the number of elements in a mathematical set. In question there are three…

Q: The death rate per 100,000 for lung cancer is 7 among nonsmokers and 71 among smokers. The…

A: Given that: People with lung cancer among nonsmokers, R0=7 People with lung cancer among smokers,…

Q: For each conjecture, state the null and alternative hypothesis and determine the hypothesis tail…

A: From the provided information, The average age of a Filipino farmer is 57 years old. That is µ = 57…

Q: the z-score corresponding to X = 24 and the X value corresponding to z = 1.50 for each of the…

A: Here AS PER POLICY I HAVE CALCULATED FIRST 3 SUBPARTS KINDLY REPOST FOR REMAINING PARTS WITH NOTE I…

Q: In one town, the number of burglaries in a week has a Poisson distribution with a mean of 1.9…

A: given data poisson distributionλ = 1.9 burglaries per week. x = no. of burglaries in a weekP(x=X)…

Q: Suppose that weight of adolescents is being studied by a health organization and that the…

A: GIVEN DATA,  here x and p(x) are given we have to find out that it is sognificant to have no obese…

Q: A researcher wants to know whether the number of hours students spent on social networkin (e.g.,…

A: The number of observations is 5.

Q: Suppose you draw an observation (x = 115) from non-std normal distribution, X~N(105,13). We can…

A: given data  x = 115 X~N(105,13) so,μ=105,σ=13 we have to find standardized score (Z) = ?

Q: Consider the following data set 1-21 13 12 1-1/1 and the model y = a + a₁ sin(x) In the sense of the…

A: Given Information: x y sin(x) -2 2 -0.9093 1 -1 0.841471 3 1 0.14112   Choice 1: a0=-3.8…

Q: (b) Compute the MSE for the four-week moving average forecasts. (Round your answer to two decimal…

A: Given that, The data is as follows, Week  sales 1 18 2 22 3 19 4 24 5 19 6 16 7 21…

Q: Standard Deviation Skewness Kurtosis o. Using the Jarque-Bera test, specify the null and alternative…

A: Given The data is as follows: Sample size, n=20 Mean=69.14 Standard deviation=11.38 Skewness=1.14…

Q: Suppose you flip a fair coin 10 times. What is the probability of getting at least 8 heads? How does…

A: Answer:- Given, A fair coin flip 20 times.  Then , probability of getting a head , P(H) =…