Answered: A true/false test has 100 questions.…

A true/false test has 100 questions. Using the normal approximation to the binomial distribution, what is the probability of getting 55 or more correct by just guessing? a) .05 b) .16 c) .26 d) .5

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: The lifetime of a new brand of light bulb follows an exponential distribution with a mean of 2000…

Q: C. The probability that the the child will be older than 5 years old? | 0.8681 d. The probability…

A: Consider that the answer of the given part a, b, and c are the correct answer. And distribution is…

Q: . For a standard normal random variable, find the point in the distribution in which 10% of the…

Q: If n = 6 and n = 0.40, what is the probability that X > 1?

A: 4) Answer: Given n = 6 , p =0.40 Using binomial probability nCx x px (1-p)n-x P(X>1) = 0.76672…

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 79…

A: (a) Determine the distribution of X. The distribution of X is determined below as follows:

Q: a) Given the probability distribution below, find the missing value, : -71 0.101 51 y 69 0.226…

A: a) Define the probability distribution p(x) for random variable x. The probability distribution p(x)…

Q: The probability is 0.35 that a traffic fatality involves an intoxicated or alcohol-impaired driver…

A: Formula : Binomial distribution is given by

Q: The accompanying table describes results from groups of 8 births from 8 different sets of parents.…

A: Let x is random variable.Given probability distribution table is:Number of Girls…

Q: Using the standard normal table (z-table) find the following probabilities or percents: 1) What is…

Q: using a binomial distribution 20% of US adults have some type of mental illness. You randomly…

A: Consider X be a random variable which follows binomial distribution indicates the number of adults…

Q: 24)A random sample of size 28 is drawn from a population with mean (u) 520 and SD unknown. The…

A: Given Mean=520 S=18 n=28 X-bar=525

Q: Q P.21: According to the statistics, 29.17% of females aged 20 to 24 are married. If we take a…

Q: The average hourly wage of employees of a certain company is $11.88. Assume the variable is normally…

A: The mean of the distribution is .The standard deviation of the distribution is .The population is…

Q: se included in the table. Texted While Driving No Texting While Driving Drove When Drinking Alcohol?…

A: According to the given information in this question we need to find the following probability

Q: A random variable is normally distributed with a mean of μ50 and a standard deviation of a = 5. a.…

A: The formula of the Z-score is,Where,X denotes the raw data point,µ denotes the population mean,σ…

Q: The following data summarizes results from 961 pedestrian deaths that were caused by accidents. If…

A: From the provided information, Pedestrian intoxicated Yes No Total Driver Yes 60…

Q: A recent survey reported that 37% of 18- to 29-year-olds in a certain country own tablets. Using the…

Q: Ques 3) The probability of success of random variable X is 0.6. X follows a geometric distribution.…

Q: Suppose you are playing a game. The random variable, Y, represents your net profit in dollars. The…

Q: Find the standard deviation, σ, for the binomial distribution which has the stated values of n and…

Q: ) Find the mean, u, for the binomial distribution which has the stated values of n and p. Round…

A: given data binomial distribution n= 676 p = 0.7 mean(μ) = ?

Q: Answer as simplified fraction The table shows the number of video games sold worldwide for the…

A: GameGames SoldGame 118280000Game 216960000Game 311950000Game 411100000Game…

Q: 4.41. Which of the following is a measure dispersion? a. Median b. Mode c. Average d. Interquartile…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: The probability of randomly selecting a green marble from a bag of 20 marbles is 1/20. Which of the…

A: Here we need to choose from the correct option, whether the given outcome is likely, unlikely or…

Q: 13) Approximately 59.4% of adults have added bleach to their laundry. Assume six adults are randomly…

A: Given n=6 P=0.594

Q: The amount of coffee that people drink per day is normally distributed with a mean of 15 ounces and…

A: Note: If the question contains multiple parts only allow to do first four subparts as per the…

Q: If a seed is planted, it has a 55% chance of growing into a healthy plant. Let X be the number of…

A: Let X: the number of seeds grow into healthy plants P(seeds grow into a healthy plant) = 0.55

Question

A true/false test has 100 questions. Using the normal approximation to the binomial distribution, what is the probability of getting 55 or more correct by just guessing? a) .05 b) .16 c) .26 d) .5

Video Video

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Determine the given data

VIEW

Step 2: Calculate mean and standard deviation

VIEW

Step 3: Calculate probability of getting 55 or more correct by just guessing

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

The probability is 0.35 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In nine traffic fatalities, find the probability that the number, Y, which involve an intoxicated or alcohol-impaired driver or nonoccupant is a. exactly three; at least three; at most three. b. between two and four, inclusive. c. Find and interpret the mean of the random variable Y. d. Obtain the standard deviation of Y. a. The probability that exactly three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is enter your response here. (Round to four decimal places as needed.) Part 2 The probability that at least three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is enter your response here. (Round to four decimal places as needed.) Part 3 The probability that at most three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is enter your…
A random variable follows a binomial distribution with the probability of success for one trial at 0.83 and 17 randomly selected trials. Round to the fourth. a) Find the mean of the distribution. b) Find the standard deviation of the distribution c) Find the probability of exactly 12 successes. d) Find the probability of exactly 9 successes. e) Find the probability of exactly 7 successes
a.) The probability that the sample mean weight of this sample of 20 is greater than 9.75 is _____? b.) The probability that the sample mean weight of this sample of 20 is between 9.75 and 9.89 is ____? c.) There is only a 5% chance that the average weight of a sample of these 20 cheese wedges will be below _____ (answer the blanks)
The accompanying table describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Complete parts (a) through (d) below. E Click the icon to view the table. a. Find the probability of getting exactly 6 girls in 8 births. (Type an integer or a decimal. Do not round.) b. Find the probability of getting 6 or more girls in 8 births. (Type an integer or a decimal. Do not round.) c. Which probability is relevant for determining whether 6 is a significantly high number of girls in 8 births: the result from part (a) or part (b)? O A. The result from part b, since it is the probability of the given or more extreme result. O B. The result from part a, since it less than the probability of the given or more extreme result. O C. The result from part b, since it is the complement of the result of part a. O D. The result from part a, since it is the exact probability being asked. d. Is 6 a significantly high…
The annual rainfall (in inches) in a certain region is normally distributed with u = 24 and o O A. 0.117 4.2. What is the probability that the rainfall exceeds 29 inches in a given year? O B. 0.025 O C. 0.063 D. 0.125
The probability is 0.35 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In six traffic fatalities, find the probability that the number, Y, which involve an intoxicated or alcohol-impaired driver or nonoccupant is a. exactly three; at least three; at most three. b. between two and four, inclusive. c. Find and interpret the mean of the random variable Y. d. Obtain the standard deviation of Y. Only typing answer Please explain step by step
9:33 Ch 16 HWb Task Cards Mixed Prob... 10. Birdwatching or birding is the observation of birds as a recreational activity. It can be done with the naked eye, through a visual enhancement device like binoculars and telescopes, or by listening for bird sounds. Birdwatchers in different regions in the United States did a bird . LTE count for specific species in January of 2013. a. What is the probability that the bird being studied is from the Central US or a Blue Jay? b. What is the probability that a Blue Jay being studied is from the Central US? c. Are region and bird species mutually exclusive? Explain. d. Are region and bird species independent? Explain. Cardinals Blue Jays 87 28 62 15 Northeast Southwest Central 52 35 Eagles 44 81 12 Sparrows 10 8 6
A recent survey reported that 38% of 18- to 29-year-olds in a certain country own tablets. Using the binomial distribution, complete parts (a) through (e) below. a. What is the probability that in the next six 18- to 29-year-olds surveyed, four will own a tablet? The probability is (Type an integer or a decimal. Round to four decimal places as needed.) b. What is the probability that in the next six 18- to 29-year-olds surveyed, all six will own a tablet? The probability is (Type an integer or a decimal. Round to four decimal places as needed.) c. What is the probability that in the next six 18- to 29-year-olds surveyed, at least four will own a tablet? The probability is (Type an integer or a decimal. Round to four decimal places as needed.) d. What are the mean and standard deviation of the number of 18- to 29-year-olds who will own a tablet in a survey of six? The mean number of 18- to 29-year-olds who own tablets out of six surveyed is. (Type an integer or a decimal. Round to four…
The probability is 0.4 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In six traffic fatalities, find the probability that the number, Y, which involve an intoxicated or alcohol-impaired driver or nonoccupant is a. exactly three; at least three; at most three. b. between two and four, inclusive. c. Find and interpret the mean of the random variable Y. a. The probability that exactly three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) The probability that at least three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) The probability that at most three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) b. The probability that between two and four…
The amount of coffee that people drink per day is normally distributed with a mean of 16 ounces and a standard deviation of 5.5 ounces. 35 randomly selected people are surveyed. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N b. What is the distribution of ? T - N( c. What is the probability that one randomly selected person drinks between 15.7 and 16.1 ounces of coffee per day?
d and e only