In a recent study on world​ happiness, participants were asked to evaluate their current lives on a scale from 0 to​ 10, where 0 represents the worst possible life and 10 represents the best possible life. The responses were normally​ distributed, with a mean of 5.5 and a standard deviation of 2.1. Answer parts ​(a)–​(d) below.       Question content area bottom Part 1 ​(a) Find the probability that a randomly selected study​ participant's response was less than 4.   The probability that a randomly selected study​ participant's response was less than 4 is 0.23753   0.23753. ​(Round to four decimal places as​ needed.) Part 2 ​(b) Find the probability that a randomly selected study​ participant's response was between 4 and 6.   The probability that a randomly selected study​ participant's response was between 4 and 6 is 0.3560   0.3560. ​(Round to four decimal places as​ needed.) Part 3 ​(c) Find the probability that a randomly selected study​ participant's response was more than 8.   The probability that a randomly selected study​ participant's response was more than 8 is enter your response here   . ​(Round to four decimal places as​ needed

Q: "The marks of the students in a certain examination are normally distributed with mean marks at 40% ...

A:

Q: 2.2 Roulette wheel: The game of roulette involves spinning a wheel with 38 slots: 18 red, 18 black, ...

A: Given : No. of Red balls =18 No. of Black balls = 18 No. of Green balls = 2 Definition : Prob of an ...

Q: 5. The concept of anchoring is one that makes us question our own rationality. An example of anchori...

A: Given Data : For Sample 1 x̄1 = 18.2 s1 = 28.77 n1 = 14 For Sample 2 ...

Q: ean IQ is 123 with a standard deviation of 22. Suppose 55 adults are randomly selected for a market ...

A:

Q: For certain data the following regression equations were obtained: 4х — 5у + 33 % 0 20x + 9y -- 107 ...

A: Given two equations : We have to estimate y when x=20 And x when y=20

Q: Give examples of where the use of regression analysis can be benificially be made.

A:

Q: Find the values of mean and S.D. from the following data relating to a normal distribution. 10% of t...

A:

Q: JOYFUL Fashion Company is reviewing the monthly sales in year 2021. The monthly sales (in millions) ...

A:

Q: Give three numbers whose mean is 8, mode is 6 and median is 10 and range is 8.

A:

Q: Following is the data of sales figure of a company for 100 days: Compute the average deviation. Sale...

A:

Q: Explain mining plot technique.

A:

Q: 3.77 If Y has a geometric distribution with success probability p, show that P(Y = an odd integer ) ...

A: Y has a geometric distribution with success probability =p We have to prove P(Y=an odd integer) = p/...

Q: How would you use the normal distributic to find approximately the frequency of exactly 5 successes ...

A:

Q: 3.73 A certified public accountant (CPA) has found that nine of ten company audits contain sub- stan...

A: Geometric distribution is given by    

Q: The arithmetic mean and the standard deviation of a set of 9 items are 43 and 5 respectively. If an ...

A:

Q: Assume we have a batch of 1000 batteries including 950 that are good and 50 that are defective. Assu...

A:

Q: Use the standard normal table to find the following probability. Enter your answer as a proportion (...

A:

Q: The capacitances of certain electronic components have a normal distribution with a mean u = 175 ar ...

A: Given : The capacitances of certain electronic components have a normal dist. with  Mean (μ) = 175 S...

Q: consider the hypotheses below. Ho: µ = 50 H1: µ# 50 siven that x = 54, s= 20, n= 16, and a = 0.01, a...

A: We have given that  x = 54, s = 20, n = 16, and  Level of significance= alpha= 0.01,

Q: Automobile racing, high-performance driving schools, and driver education programs run by automobile...

A: For the provided data of "weight" and "price", the scatter plot is to be plotted by taking the indep...

Q: A die is thrown at random. What is the expectation of the mumber on it ?

A: Here use expecting formula

Q: 11. The National Oceanic and Atmospheric Administration tracks the amount of oysters harvested from ...

A: From the given information we find the correlation and regression equation.

Q: 4. The quantity of Calcium level in the blood of a man follows a normal distribution with a standard...

A: Introduction: It is required to identify the confidence level, which suggests that the confidence in...

Q: 3. Someone claims that a one year increase in the average age of birth mothers is associated with an...

A: Given that, Someone claims that a one year increase in the average age of birth mothers is associate...

Q: Problem 5 a grocery store's sales experience indicates that its daily apple sales follow a normal di...

A: We have given that.   X~N( μ , ?^2 )   μ = 60, ? =15   Z-score =( x - μ )/?  

Q: 7. Let S be the finite state space of a Markov chain. Prove that if rES is recurrent, then for all y...

A:

Q: tSTAT = (Type an integer or a decimal.)

A: Here use test statistic formula 

Q: 1. Between z = 0 and z = 1.63 2. Between z = 0 and z = -1.78 3. Between z = 1.56 and z = 2.51 %3D 2 ...

A: As per our guidelines we are supposed to answer only 3 sub-parts of any question so I am solving fir...

Q: Understanding and predicting warranty expense is an Important determination for manufacturing firms....

A:

Q: In a survey, 17 people were asked how much they spent on their child's last birthday gift. The resul...

A: Given that; Mean = $ 42 Standard deviation = $ 4  Confidence interval is 99%  By using one sample t ...

Q: Fit a trend function y = A. Bx to the following data. 2 3 4 5 y : 1.6 4.5 13.8 40 2 125.0

A:

Q: 9. 260 280 360 360 360 640 750 770 790 1110 y 150 175 250 280 237 450 500 520 530 823 Is there a cor...

A: Given that  x 260 280 360 360 360 640 750 770 790 1110 y 150 175 250 280 237 450 500 520 530 82...

Q: P(X≤1/8)= ? P(X>5/6)= ? P(0.14≤X≤0.46)= ?

A:

Q: The cumulative distribution function of the continuous random variable X is given by: image. Cal...

A:

Q: Exercises 23: A mathematical department wants to attest if there is a gender bias in student evaluat...

A:

Q: It is generally believed that there is a relationship between a college’s acceptance rate and its gr...

A: "Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts f...

Q: Here are boxplots of the points scored during the first 10 games of the season for both Fran and Kel...

A: Given: Box-Plot  

Q: 10. 1.1 1.9 2.4 4.1 4.6 6. 8.1 8.3 9.1 9.8 y 10 25 41 261 439 2,041 18,271 22,130 | 56,151 119,550 I...

A: Given data: x y 1.1 10 1.9 25 2.4 41 4.1 261 4.6 439 6 2041 8.1 18271 8.3 22130 ...

Q: a. In words, define the Random Variable X. b. List the values that X may take on. (List every single...

A:   Here AS PER POLICY I HAVE CALCULATED 3 SUBPARTS PLZ REPOST FOR REMAINING PARTS HERE given, A schoo...

Q: A manager of a pizza restaurant has changed the restaurant's delivery process in an effort to reduce...

A: Given: Sample size(n)=36Sample standard deviation (s)=6Population meanμ=30

Q: "LANGAW" PROBLEM SOLVING A population of flies Z is known to have a rate of growth proportional to Z...

A:

Q: Create a relative frequency distribution and round the answers to two decimal places. Relative Respo...

A:

Q: 8. Given below is the information relating to marks in Statistics (X) and marks in Accountancy (Y) o...

A:

Q: SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested ...

A:

Q: Find probable error, when the coefficient of correlation is 0.8 and number of items is 64 and interp...

A:

Q: 3. Someone claims that a one year increase in the average age of birth mothers is associated with an...

A: Given that Someone claims that a one year increase in the average age of birth mothers is associated...

Q: 23. You have been assigned to forecast the number ofaircraft engines ordered each month by Commins E...

A: Let t be current time (denoting end of Feb). 120 engines (given) are ordered. So, in March, the actu...

Q: In a survey, 23 people were asked how much they spent on their child's last birthday gift. The resul...

A: We have given that  Sample size n =23 Sample mean =42  Standard deviation =8

Q: e. Find the probability that at most four students will attend. (Round to five decimals.) f. Find th...

A:

Q: The number of pieces of mail received daily at the school office is normally distributed with mean ?...

A: