Question

In: Statistics and Probability

The probability that a radio will last more than 5 years is 0.87. From a batch...

The probability that a radio will last more than 5 years is 0.87. From a batch of 400 such radios, what is the probability that:

a) More than 327 and less than 349 radios will last more than 5 years?

b) Exactly 356 of them will last more than 5 years?

c) Less than 368 of them will last more than 5 years?

Expert Solution

Refer Standard normal table/Z-table to find the probability OR use excel formula "=NORM.S.DIST(0.2230, TRUE)" & "=NORM.S.DIST(-3.1965, TRUE)" to find the probability.

--------------------------------------------------------------------------------------------------------

Refer Standard normal table/Z-table to find the probability OR use excel formula "=NORM.S.DIST(1.2637, TRUE)" & "=NORM.S.DIST(1.1151, TRUE)" to find the probability.

--------------------------------------------------------------------------------------------------------

Refer Standard normal table/Z-table to find the probability OR use excel formula "=NORM.S.DIST(2.8992, TRUE)" to find the probability.

orchestra answered 1 year ago

a cash flow of $100 years in 5 years is always worth more than$99 in...

a cash flow of $100 years in 5 years is always worth more than $99 in 4 years. true or false?

More wealth was created in the last 30 years than at any time in Canadian history,...

More wealth was created in the last 30 years than at any time in Canadian history, yet there were significant increases in poverty and food bank use during the same period. How might a structural functionalist explain this trend? How might a conflict theorist explain this trend? Which explanation do you find most compelling? 350 words, please!

on average 5 people enter the retaurant per minute. what is the probability that more than...

on average 5 people enter the retaurant per minute. what is the probability that more than 25 people enter the restaurant in the next 4 minutes?

Assume that a certain batch of 200 castings contains 5 defectives. Calculate the probability that of...

Assume that a certain batch of 200 castings contains 5 defectives. Calculate the probability that of three castings selected, exactly one will be defective. Answer: 0.0720 (Show work and reasoning!)

a) Find the probability of an individual being more extreme than 3.2 standard deviation from the...

a) Find the probability of an individual being more extreme than 3.2 standard deviation from the mean. b) Is this unusual? Select an answer Not unusual because the probability is high unusual because the probability is low unusual because the probability is high not unusual because the probability is low

5(a)What is the probability that out of 200 pieces of randomly selected glass, more than fifty-five...

5(a)What is the probability that out of 200 pieces of randomly selected glass, more than fifty-five of them are defective. [5 marks] A sample of 12 of bags of Calbie Chips were weighed (to the nearest gram), and listed here as follows. 219, 226, 217, 224, 223, 216, 221, 228, 215, 229, 225, 229 Find a 95% confidence interval for the mean mass of bags of Calbie Chips. [9 marks] (b) Professor GeniusAtCalculus has two lecture sections (A and B)...

Jannelle Richards has worked as a graphic designer for more than 5 years. She decided to...

Jannelle Richards has worked as a graphic designer for more than 5 years. She decided to open her own graphic design business as of the first of last month, which is known as Sonoran Graphic Designs. Account for the effect of the following transactions on the accounting equation for Sonoran. 1. Initial investment by Jannelle Richards, $25,000. 2. Purchased office supplies from OfficeMax for $1,500, on credit. 3. Paid $4,500 on a 6-month office rental contract. 4. Purchases $9,000 of...

Find the probability that the disposable income of a resident is more than $ 45,000 is...

Find the probability that the disposable income of a resident is more than $ 45,000 is this an unusual event? Explain

Pedro earned a degree from an elite college last year, and now he earns more than...

Pedro earned a degree from an elite college last year, and now he earns more than his friend Juan, who obtained a degree from a public college. Describe two alternative economic theories that explain this phenomenon.

Question Consider the following table. Defects in batch Probability 2 0.35 3 0.23 4 0.20 5...

Question Consider the following table. Defects in batch Probability 2 0.35 3 0.23 4 0.20 5 0.09 6 0.07 7 0.06 Find the standard deviation of this variable. Homework Help: 3VA. Calculating the mean, variance, and standard deviation of discrete variables (Links to an external site.) (4:35) 3DC. Mean, expected value, variance, and standard deviation of discrete variables (Links to an external site.) (DOCX) Group of answer choices 3.48 4.50 1.51 2.27 Flag this Question Question The standard deviation of...