/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 6.11 Let Y denote the number of broke... [FREE SOLUTION] | 91影视

91影视

Let Y denote the number of broken eggs in a randomly selected carton of one dozen 鈥渟tore brand鈥 eggs at a local supermarket. Suppose that the probability distribution of Y is as follows.

Valueyi01234
ProbabilityPi0.78
0.11
0.07
0.03
0.01

a. What is the probability that at least 10 eggs in a randomly selected carton are unbroken?

b. Calculate and interpret Y.

C. Calculate and interpret Y.

d. A quality control inspector at the store keeps looking at randomly selected cartons of eggs until he finds one with at least 2 broken eggs. Find the probability that this happens in one of the first three cartons he inspects.

Short Answer

Expert verified
  1. The required probability is 0.96.
  2. The resultant mean is 0.38.
  3. The standard deviation is 0.822.
  4. The probability is 0.295.

Step by step solution

01

Part (a) Step 1: Given information

The following is the probability distribution:

Value01234
Probability0.780.110.070.030.01
02

Part (a) Step 1:  Calculation

At most two eggs are broken if at least ten eggs are undamaged.

The following formula can be used to compute the probability:

P(Y=2)=P(Y=0)+P(Y=1)+P(Y=2)=0.78+0.11+0.07=0.96

Thus, the required probability is 0.96.

03

Part (b) Step 1: Given information

The following is the probability distribution:

Value01234
Probability0.780.110.070.030.01
04

Part (b) Step 2: Calculation

The average can be calculated as follows:

Mean=yP(y)=0(0.78)+1(0.11)+2(0.07)+3(0.03)+4(0.01)=0.38

The predicted number of broken eggs are 0.38

05

Part (c) Step 1: Given information

The following is the probability distribution:

Value01234
Probability0.780.110.070.030.01
06

Part (c) Step 2: Calculation

Calculate the standard deviation value,

=y2P(y)-yP(y)2=020.78+120.11+.+420.01-(0.38)2=0.822

The number of broken eggs is expected to differ by 0.822 from the mean of 0.38 eggs.

07

Part (d) Step 1: Given information

The following is the probability distribution:

Value01234
Probability0.780.110.070.030.01
08

Part (d) Step 2: Calculation

The chances of receiving at least two cracked eggs are:

P(Y2)=P(Y=2)+P(Y=3)+P(Y=4)=0.07+0.03+0.01=0.11

Now,

P(X=1)=0.11(1-0.11)1-1=0.11P(X=2)=0.11(1-0.11)2-1=0.0979P(X=3)=0.11(1-0.11)3-1=0.087131

Thus, the resultant probability is:

P(1X3)=P(X=1)+P(X=2)+P(X=3)=0.11+0.0979+0.087=0.295

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A company鈥檚 single-serving cereal boxes advertise 1.63ounces of cereal. In fact, the amount of cereal X in a randomly selected box can be modeled by a Normal distribution with a mean of 1.70ounces and a standard deviation of 0.03ounce. Let Y=the excess amount of cereal beyond what鈥檚 advertised in a randomly selected box, measured in grams (1ounce=28.35grams).

a. Find the mean of Y.

b. Calculate and interpret the standard deviation of Y.

c. Find the probability of getting at least 1grammore cereal than advertised.

Electronic circuit The design of an electronic circuit for a toaster calls for a 100ohm resistor and a 250-ohm resistor connected in series so that their resistances add. The components used are not perfectly uniform, so that the actual resistances vary independently according to Normal distributions. The resistance of 100-ohm resistors has mean 100ohms and standard deviation 2.5ohms, while that of 250-ohm resistors has mean 250 ohms and standard deviation 2.8ohms.

(a) What is the distribution of the total resistance of the two components in series?

(b) What is the probability that the total resistance

Commuting to work Refer to Exercise 52 .

a. Assume that B and Ware independent random variables. Explain what this means in context.

b. Calculate and interpret the standard deviation of the difference D(Bus - Walk) in the time it would take Sul茅 to get to work on a randomly selected day.

c. From the information given, can you find the probability that it will take Sul茅 longer to get to work on the bus than if he walks on a randomly selected day? Explain why or why not.

Kids and toys In an experiment on the behavior of young children, each subject is placed in an area with five toys. Past experiments have shown that the probability distribution of the number X of toys played with by a randomly selected subject is as follows:

Part (a). Write the event 鈥渃hild plays with 5 toys鈥 in terms of X. Then find its probability.

Part (b). What鈥檚 the probability that a randomly selected subject plays with at most 3 toys?

Working out Choose a person aged 19 to 25 years at random and ask, 鈥淚n the past seven days, how many times did you go to an exercise or fitness center or work out?鈥 Call the response Y for short. Based on a large sample survey, here is the probability distribution of Y

Part (a). A histogram of the probability distribution is shown. Describe its shape.

Part (b). Calculate and interpret the expected value of Y.

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.