According to a recent​ study, 80% of adults say they play games on their smartphone. Suppose we randomly select 200 adults and find that​ 68% of the sample plays games on their smartphone. Which of the following correctly describes the distribution for the proportion of adults in the sample who play games on their​ smartphone?   A. ​pˆ ~​ AN(0.68, 0.0330)   B. ​pˆ ~​ AN(0.80, 0.0283)   C. ​pˆ ~​ AN(0.80, 0.0330)   D. X​ ~ AN(160,​ 5.6569)

Question
According to a recent​ study, 80% of adults say they play games on their smartphone.
Suppose we randomly select 200 adults and find that​ 68% of the sample plays games on
their smartphone. Which of the following correctly describes the distribution for the
proportion of adults in the sample who play games on their​ smartphone?
 
A.
​pˆ ~​ AN(0.68, 0.0330)
 
B.
​pˆ ~​ AN(0.80, 0.0283)
 
C.
​pˆ ~​ AN(0.80, 0.0330)
 
D.
X​ ~ AN(160,​ 5.6569)

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: State the null and alternative hypotheses you would use to test the following situation.The average ...

A: Click to see the answer

Q: QUESTION 47 The following questions relate to this SPSS output: An experimenter wanted to test the e...

A: Introduction: Denote σ12, σ22 as the true population variances for the two populations. The null and...

Q: Using traditional methods it takes 91 hours to receive an advanced flying license. A new training te...

A: Click to see the answer

Q: In a random sample of 850​ Americans, 385 reported that they work two jobs. Which of the following i...

A: The known values are, The sample proportion is,

Q: A newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing firm believes...

A: Given that, a newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing f...

Q: Spinning a coin, unlike tossing it, may not give heads and tails equal probabilities. I spun a penny...

A: It is given that the spin a penny 125 times and got head for 55 times. Here, the value of n is 125 a...

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For degr...

A: Click to see the answer

Q: Two dice are rolled. Determine the probability of the following. ("Doubles" means both dice show the...

A: Obtain the probability of rolling an even number or doubles. Probability:  The ratio of the number ...

Q: Assume that when adults with smartphones are randomly​ selected, 5858​% use them in meetings or clas...

A: Obtain the probability that at least 22 of them use their smart phones in meetings or classes. From ...

Q: Use the formula for the probability of the complement of an event.Two dice are tossed. What is the p...

A: 2 dice are tossed therefore total no of possible events= 6*6 =36   probability of getting a sum of a...

Q: This year’s water pollution readings at State Park Beach seem to be lower than last year. A sample o...

A: The hypotheses can be defined as: Null hypothesis: H0: µ = 3.8 Alternative hypothesis: H1: µ < 3....

Q: Can someone answer this one please? Assume that the sample is a simple random sample obtained from a...

A: Click to see the answer

Q: Find the area, to the nearest thousandth, of the indicated region of the standard normal distributio...

A: P(z>1.42)=? P(z>1.42)= 1 - P(z<1.42) From z-table the area for 1.42 is 0.922   P(z>1.42...

Q: Activity 19 number 1

A: Purpose: To compare the proportion of orange colored candy pieces between Skittles and M&M’s. Cl...

Q: Use the formula for the probability of the complement of an event.Two dice are tossed. What is the p...

A: Given 2 dices are tossed, No of outcomes when 1 dice is tossed =6 No of outcomes when 2 dice are tos...

Q: Determine the point estimate.An article in an educational journal discussing a non-conventional high...

A: Click to see the answer

Q: Porphyrin is a pigment in blood protoplasm and other body fluids that is significant in body energy ...

A: Let X be a random variable that represents the number of milligrams of porphyrin per deciliter of bl...

Q: Houseflies have short lifespans. Males of a certain species have lifespans that are strongly skewed ...

A: Calculate the sample mean lifespan. The mean life span is obtained below: Central limit theorem: If ...

Q: Use the table to answer the question. Note: Round z-scores to the nearest hundredth and then find th...

A: Click to see the answer

Q: Early estimations pegged the mortality rate for corona virus in certain populations as high as 10%. ...

A: It is given that:

Q: In a study of government financial aid for college​ students, it becomes necessary to estimate the p...

A:  

Q: A recent study indicated that​ 67% of U.S. adults consider air conditioning a necessity. If a random...

A: Let X denote the no.of U.S. adults consider air conditioning a necessity and it follows binomial dis...

Q: A recent poll revealed the political affiliations of 205 Americans, along with the region of the cou...

A: Introduction: The null and alternative hypotheses for the test would be: H0: Political affiliation o...

Q: A card is selected at random from a standard deck of playing cards.Compute the probability that the ...

A: Introduction: The probability of an event in an experiment is the number outcomes in the experiment ...

Q: A survey asked 850 respondents about their highest levels of completed education. The results are gi...

A: Given, Total number of respondents= 850, Respondents having bachelor degree= 187 P(Respondent has ba...

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population o...

A: (a)  Solution: It is given that, Population standard deviation, =19 Margin of error,E = 07 The value...

Q: Toy manufacturer has noticed that the number of faulty Toys detected in a production depends on the ...

A: Click to see the answer

Q: A manager for an insurance company believes that customers have the following preferences for life i...

A: G)   In the given information, there are 3 groups. The degrees of freedom is, number of groups-1=3-1...

Q: Explain how error measures can help to optimize moving averages, weighted moving averages, and expon...

A: Explanation:   Some of the error measures are MAD(Mean Absolute Deviation), RMSE(Root mean square er...

Q: v Chapter 06, Section 6.3, Intelligent Tutoring Problem 026 X Your answer is incorrect. Try again. N...

A: Click to see the answer

Q: n a certain school district, it was observed that 30% of the students in the element schools were cl...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: Chapter 08, Section 8.2, Intelligent Tutoring Problem 011 For a data set obtained from a sample of s...

A: Click to see the answer

Q: An educational researcher wishes to know if there is a difference in academic performance for colleg...

A: A)   The appropriate Null and Alternative Hypotheses are given below:   Null hypothesis:   H0: The f...

Q: Chapter 08, Section 8.2, Problem 022

A:  

Q: What is the correct interpretation of the significance level a in a hypothesis test? The probability...

A: The acceptance of Ha when H0 is true is called a Type I error. The probability of committing a type ...

Q: A population mean is 13. The sample mean is 12.8, and the sample standard deviation is 2. The sample...

A: Given that,

Q: Friendship Motivation. In the article “Assessing Friendship Motivation During Preadolescence and Ear...

A: From the provided information, The FMSC score of boys is normally distributed with mean (µ) 9.32 and...

Q: Many consumers pay careful attention to stated nutritional contents on packaged foods when making pu...

A: Identify the correct option that best describes the type I error for the given null hypothesis. The ...

Q: Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the n...

A: Click to see the answer

Q: A statistician wants to estimate the mean loss suffered by Delta pilots in the labor negotiations to...

A:  

Q: 1. A car insurance company performed a study to determine whether an association exists between age ...

A: Click to see the answer

Q: Let x be a random variable representing percentage change in neighborhood population in the past few...

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case yo...

Q: Which point would most likely be considered an outlier if it was added to the data in the table? (2,...

A: In statistics, an outlier can be defined as a data point that differs significantly from other obser...

Q: The following random sample was selected from a normal distribution: 4, 6, 3, 5, 9, 3. f. Use p-Valu...

A: The mean for the given data can be obtained as follows: The standard deviation is as follows:

Q: IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual...

A: Determine the distribution of the random variable X follows. The distribution of the random variable...