The National Coffee Association reported that 63% of Malaysia adults drink coffee daily. A random sample of 250 Malaysia adults is selected. Find the standard deviation. Find the probability that more than 67% of the sampled adults

The National Coffee Association reported that 63% of Malaysia adults drink coffee daily. A random sample of 250 Malaysia adults is selected. Find the standard deviation. Find the probability that more than 67% of the sampled adults

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 number of thunderstorm in Indiana in a calendar month is normally distributed with a mean of 75,…

A: normal distributionμ = 75σ = 20

Q: 8. The reading speed of sixth-grade students is approximately normal, with a mean speed of 135 words…

Q: Assume the room rate for a three-star hotel in a European city follows a normal distribution with a…

Q: The weights of newborn for hippopotami is approximately Normal, with a mean of 86 pounds and a…

A: Given,mean(μ)=86standard deviation(σ)=10

Q: Automobile repair costs in Georgia continues to rise with an average cost now at $367 per repair…

Q: Toby’s Trucking Company determined that the distance traveled per truck per year is normally…

A: Given that: Population mean, μ=50000 Population standard deviation, σ=12000

Q: A road averages 2,785 vehicles per day with a standard deviation of 585 vehicles per day. A traffic…

A: Let X be the random variable from normal distribution with average or mean (μ) = 2785, standard…

Q: 21. The mean height of a Clydesdale horse is 72 inches with a standard deviation of 1.4 inches. What…

A: Mean(µ) = 72Standard deviations (σ) = 1.4X ~ N (µ, σ )= N(72, 1.4)

Q: Suppose 18% of movie-goers say that horror is their favorite movie genre. If a random sample of…

A: Obtain the mean number of movie-goers that prefer horror movie genre. The mean number of movie-goers…

Q: The average number of acres burned by forest and range fires in a large county is 3,700 acres per…

A: Mean(μ)=3700 standard deviation(σ)=550

Q: According to San Jose Mercury News, children in China average 3 hours a day unsupervised. Most of…

Q: The mean annual cost of automobile insurance is $939. Assume that the standard deviation is = $245.…

A: We have given that. X~N( μ , ?^2 ) μ=939 , ?=245 , n/50 Z-score =( x - μ )/? NOTE:-…

Q: If 80% of the applicants rae able to pss a driver’s proficiency road test, find the mean, variance…

A: According to our policy we can answer only first part for remaining please repost the question.

Q: 24. The average annual professor's salary is $159,964 for an assistant professor and $147,702 for an…

A: Mean() of associate professor=147707standard deviation() of associate professor=8900The average…

Q: 2. The average gas mileage of an Audi A5 Cabriolet car is 39.5 miles per gallon. If the gas mileages…

A: given information According to given question random variable (x = average gas mileage) follows…

Q: 5. The average American adult eats an average of 8.5 gallons of ice cream per year. Assume the…

A: Solution: Let X be the amount of ice cream eaten is normally distributed with mean μ=8.5 and…

Q: On a particular college campus, 29% of the students belong to a fraternity or sorority. If 44…

A: Let X be the number of students who belong to a fraternity or sororityn=44 is the number of…

Q: study indicates that 18- to 24- year olds spend a mean of 115 minutes watching video on their…

Q: Assume the credit card balances of younger college educated employed persons are normally…

Q: The number of pizzas consumed per month by university students is normally distributed with a mean…

A: Let "X" be the number of pizzas per month by university students. Draw the normal curve and shade…

Q: The percent fo Coloradans that own a Subaru is 56%. If you were to take a random sample of size 70,…

A: We have given that, Let X be the random variable from binomial distribution with probability (p) =…

Q: . The reading speed of sixth-grade students is approximately normal. With a mean speed of 125…

A: Let X denote the reading speed of sixth-grade students and it follows normal distribution with a…

Q: Admission to a certain university is determined by an entry exam. The scores of this test are…

A: Obtain the score in the top 30% will be offered admission. The score in the top 30% will be offered…

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

Q: According to a recent study, 22% of people like sour candy. Suppose we obtain a random sample of 114…

A: Given: p=0.22 n=114

Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

a. The National Coffee Association reported that 63% of Malaysia adults drink coffee daily. A
random sample of 250 Malaysia adults is selected.

Find the standard deviation.

Find the probability that more than 67% of the sampled adults drink coffee daily.

Find the possibility that the proportion of the sampled adults who drink coffee daily is
between 0.6 and 0.7.

Find the probability that less than 62% of the sampled adults drink coffee daily.

Would it be unusual if less than 57% of the sampled adults drink coffee daily?

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

Step 2

Step 3

Step 4

Step 5

Trending now

This is a popular solution!

Step by step

Solved in 5 steps with 6 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.

Similar questions

CNNBC recently reported that the mean annual cost of auto insurance is 1050 dollars. Assume the standard deviation is 219 dollars, and the cost is normally distributed. You take a simple random sample of 8 auto insurance policies. Round your answers to 4 decimal places. a. What is the distribution of X? X - N 1050 b. What is the distribution of a? - N 1050 c. What is the probability that one randomly selected auto insurance is less than $996? 0.4013 d. a simple random sample of 8 auto insurance policies, find the probability that the average cost is less than $996. e. For part d), is the assumption of normal necessary? Yes No > Next Question 219 77.42
The weights of newborn for hippopotami is approximately Normal, with a mean of 85 pounds and a standard deviation of 12 pounds. a. What is the probability that a newborn hippo weighs between 90 and 110 pounds? b. Suppose baby hippos that weigh at the 5th percentile or less at birth are unlikely to survive. What weight corresponds with the 5th percentile for newborn hippos? c. In 2017, a hippo was born at a particular zoo, pounds or less? 6 weeks premature, and weighed only 27 pounds at birth. What percentage of baby hippos are born weighing 27 a. The probability that a newborn hippo weighs between 90 and 110 pounds is (Round to three decimal places as needed.) b. A weight of pounds corresponds to the 5th percentile for newborn hippos. (Round to the nearest integer as needed.) c. The percentage of hippos born weighing 27 pounds or less is %. (Round to one decimal place as needed.)
Twenty-six percent of all automobiles undergoing an emissions inspection at a certain inspection station fail the inspection. Suppose 20 randomly selected cars are tested. Round all answers three decimal places. 1)Find the mean number of cars which will fail the inspection.2) Find the standard deviation of the number of cars that will fail the inspection.
7. Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation of 20 dollars. If 74 of these repair bills are randomly selected, find the probability that they have a mean cost between 267 dollars and 269 dollars.
8. An HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you that the printing speed is actually a Normal random variable with a mean of 17.57 ppm and a standard deviation of 3 ppm. A Brother brand printer can print an average of 17.21 ppm and a standard deviation of 4 pages and its printer speed is also normally distributed. You select 10 of each printer at random. What is the probability that mean Brother print speed is at least 2 pages faster than the mean HP print speed?
b. What is the probability that fewer than four corporate officers were female? c. What is the probability that more than two corporate officers were female? d. What are the mean and standard deviation for this distribution?
1.Calculate the probability of the height being less than 300, if the distribution of height was normal. Use the mean and standard deviations 2.Generate a graph to describe the distribution of height and insert it below. Would you think that the assumption that height was normal is accurate? Why or why not? Are speed and height associated? Why or why not? Generate a graph or table that supports.