Question: statistics ' _ .... _ . . nu...- lm-'u:_' - . ' I.._u_._._.w ._ D. Question 13 2 pts ' | The average time it

statistics

' _ .... _ . . nu...- lm-'u:_' - . ' I.._u_._._".w ._ D. Question 13 2 pts ' | The average time it takes a group of adults to complete a certain ;' achievement test is 42.6 minutes The standard deviation is 8 minutes. ' Assume the variable is normally distributed. Please show the following : answers to 4 decimal places. I the test in less than 40 minutes? I il a] What is the probability that one randomly selected adult will complete F I b) What is the probabi Iitv that a sample of 50 adults will complete the test with an average time less than 40 minutes? _ I '-: .s' r

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

F - C gptc.blackboard.com/webapps/blackboard/content/contentWrapper.jsp?content_id=_18 GEORGIA PIEDMONT TECHNICAL COLLEGE 8 MATH1127: Introduction to Statistics (Asynchronous (100% Online)) 20337...

n answer as you go! Sciences Olo.. Research | ECU Dep-. I. Do NOT submit a completed exam via email, but if you have For upload questions, please write your answers out on a sheet of paper and take...

MATH220 Assignment #6 Question 1: The average time it takes a group of adults to complete a certain achievement test is 46.2 minutes. The standard deviation is 8 minutes. Assume the variable is...

Below are the results of the study. Calculate the crude (unadjusted) cumulative incidence of knee injuries for each university. Please format your answer as per 1000 persons and round to the nearest...

Can u help me with this multiple choice question ? 102554 n '5' C} Take Quiz Exit assumption? 0 The two samples have equal variances. O The two population variances are not equal. 0 The two...

D Question 1 3 pts Joslin has been participating as a key presenter at an insurance c rence. As an expert, she would inform you that, from the following items, which circumstance would be deemed as a...

Question 22 pts Harry returned his cell phone to the manufacturer after it malfunctioned. The manufacturer will want to minimize the costs of this return, and will also have to decide how to manage...

Flag question: Question 2 Question 22 pts Harry returned his cell phone to the manufacturer after it malfunctioned. The manufacturer will want to minimize the costs of this return, and will also have...

1. If extreme values occur in the data set, which of the following measures of central tendency are the most appropriate A. B. C. D. E. 2. The The The The The mean median mode variance standard...

This is my study guide and I tried my best answering all the question that. Can you please check all the questions and correct them. For the questions that are unanswered, can you please help me...

A building is constructed using bricks that can be modeled as right rectangular prisms with a dimension given above If the bricks cost $0.06 per cubic inch, find the cost of 1850 bricks. Round your...

Engineering estimates show that the variable cost of manufacturing a new product will be $35 per unit. Based on market research, the selling price of the product is to be $120 per unit and variable...

Which of the following is not a correct statement? Multiple Choice At maturity, an investor in Treasury inflation - protected securities receives an inflation - adjusted principal amount. Treasury...

7:52 Textbook/Case Source Milosevic, D. Z., Patanakul, P., & Srivannaboon S. (2010). Probability and Impact. In Case studies in project program, and organizational project management (pp. 245-246)....

1. Discuss the following: a) If you want stability, you should focus on change. b) What happens when an effect becomes a cause? c) If you do the opposite of what is expected, the reaction is changed....

2. In this chapter, the reader should reflect on the following concepts: Systemic, positive feedback loop, negative feedback loop, negative feed-back loop dominance, positive feedback loop dominance,...

1. To gain insight into communication situations regarding the fact that they should be understood by examining the relationship between the parts and the whole, and to provide an understanding that...