Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 77 and a standard deviation of 8. Use the O Cumulative Normal Distribution Table to answer the following. (a) What proportion of the scores were above 90? (b) What proportion of the scores were below 68? (c) What is the probability that a randomly chosen score is between 74 and 80? Round answers to at least four decimal places.

Q: A. Two golfing venues offer bays that customers con reserve to play various golf ing games. The…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Some of the answer is incorrect, i need help

A: From the given information In the bookshelfNumber of math books = 7Number of novels = 9Number of…

Q: sorry can you write it out in pen or pencil please

A: Given that We have to find a ..Mean b..Standard deviation c...Tally Chart

Q: How do I solve these

A:

Q: Hello, can you explain the first section of the question. Thank yu

A: Function f(x,y)  take maximum and minimum value at its critical points

Q: Please write the answer on a sheet of paper, the typing doesn't work for me, I can't see anything,…

A:

Q: I need help with the questions below, thank you

A:

Q: Sorry I do not understand the typing , could you write it out on paper?

A: Note:  As per your requirement, i answered here in handwritten on papar.

Q: please make more detailed answer to this question

A:

Q: 1. Simplify. (6-2)³ - (5 +5²) O-14 -32 34 5

A: The given expression        6-23-5+52

Q: Thank you, but could you please write your answer on a sheet of paper? I'm having trouble following…

A:

Q: can you do the next part of the question please

A: In order to  estimate the parameters, we need to calculate the sample mean and sample variance of…

Q: 1. Let (x) = x2 + 2. Then (*+h)-f(x) A) 2x + h 2xh+ h2+4 C) B) 1 D) None of the above

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Hi There, thank you for giving this a go! I tried inputting this answer, but it came back as being…

A:

Q: Find (i) the characteristic equation and (ii) the eigenvalues and corresponding - 3 5 eigenvectors…

A: Since you have posted multiple questions, we answered the first question for you. If you want any…

Q: The second and last question need to be answered

A: The sample size of companies, The sample mean, The standard deviation, The significance level, The…

Q: What percentage of hospitals provide at least some charity care? Based on a random sample of…

A: mean = 62.12 Standard deviation = 8.048

Q: 14. For f(x) = x' – 6x² +9x , identify the critical points and inflection points A) Critical Points:…

A: Dear student, Since you have posted two questions, as per our policy we will answer first question.…

Q: Determine whether the scatter diagram indicates that a linear relation may exist between the two…

A: The Negative and positive correlation are determined below as follows:   Positive correlation: when…

Q: I have a question regarding the question B. Can you please help me? Thanks

A: To use normal approximation, the following conditions should be satisfied. np>5 and n(1-p)>5

Q: ssing 2 more questions

A: here we have to use Empirical rule  68% of the values are contained in μ-σ to μ+σ 95% of the values…

Q: hello, I appreciate your answer but the answer looks funny it is difficult to understand. Would you…

A: Given- Equation of sphere . To find - volume of solid and volume of bumpy sphere. Here we will use…

Q: I asked 5 questions tonight and this is the first one that I for a correct answer.

A: If an object is moving from x=a to x=b, then the work done by the force F is calculated by the…