On Mary’s FACEBOOK page, there is a 42% chance that one of her friends will write on her wall. If she has 2400 “hits” on her page, can the probability that less than 1071 people write on her wall be modelled with a normal approximation? Explain/justify your answer.

On Mary’s FACEBOOK page, there is a 42% chance that one of her friends will write on her wall. If she has 2400 “hits” on her page, can the probability that less than 1071 people write on her wall be modelled with a normal approximation? Explain/justify your answer.

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: a new surgical procedure in preliminary trials has a probability of success of 80%. if 10 patients…

A: Let X denote the patients are scheduled to go through this procedure and it follows binomial…

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: A survey of 62 men found that 12 have a social media account. Another survey of 57 women found that…

A: Men are taken as group 1. Women are taken as group 2. Given: n1=62x1=12n2=57x2=40α=0.07

Q: A survey of 78 men found that 10 have a social media account. Another survey of 51 women found that…

A: Given Information: Women: Sample size (n1) = 51 Out of which X1 = 26 have a social media account.…

Q: There is a 72% chance that I make a stupid mistake when working on problems in class. What is the…

A: It is an important part of statistics. It is widely used.

Q: A survey found that 52% of U.S adults associate professional football with negative moral values.…

A: The objective of this question is to find the probability that exactly 65 out of 150 randomly…

Q: A polling agency claims that over 40% of adults shop for a gift within a week of an event. In a…

A: We have given that p = 40% = 0.40 n = 2730x = 1130p̂ = x/n = 1130/2370 = 0.4139Significance level…

Q: Approximately 1.55 percent of people ages 40-50 have breast cancer.* Suppose a person has a 86…

A: Probability is a chance of occurrence of any event.

Q: The National Safety Board predicts that 500 people will be killed and another 25,000 will be injured…

A: Assume that p as the true proportion of all accidents.

Q: A soccer player is practicing her goal kicking. She has a probability of 3/5 of scoring a goal with…

A: The sample size n is 15 and p=3/5.

Q: If the probability of choosing a red chip from a bucket is 0.4, What is the probability of not…

A: We have the probability of choosing a red chip from a bucket is 0.4

Q: A company manufactures calculators in batches of 64 and there is a 4% rate of defects. Find the…

A: Givensample size(n)=64p=0.04Let "x" be the no.of defects in a batchx~Binomial(n=64 ,…

Q: A magazine reported that 6 percent of all drivers talk on their cell phone while driv If 300 drivers…

A: Given data, p=6% =0.06 n=300 P(0.04<X<0.07)=?

Q: You are analysing a factory. Stage 3 of the manufacturing process has a 20% chance of finishing on…

A: Let A denote the event that Stage 3 of the manufacturing process finishes late. Thus AC denotes the…

Q: Harry is a soccer player who practices penalty kickc many times each day. Each time Harry takes a…

A: p(goal)=p=0.7q=1-p=0.3n=20x=no. of goalsp(X=x)=nCxpxqn-x binomial

Q: 5. A swim club offers swimming lessons to children in the local community free of charge each Friday…

A: Note: Hey, since multiple sub parts are posted, we will answer first three sub parts according to…

Q: Researchers have reported that elderly people who own pets are less likely to visit the doctor after…

A: Given information: Pet owners No pets 8 10 1 5 3 10 3 7 4 5 3 4 5 9 2 6 11 12…

Q: A Harris Interactive poll reported that 32.4% of 275 randomly selected Americans living in the west…

A: Denote p1, p2 as the true population proportions of Americans living in the west and south,…

Q: A certain wrench has a 5% breakage rate in normal use. Another brand of wrench has a 2 % breakage…

A: It was stated that a certain wrench has a 5% breakage rate in normal use. Another brand of wrench…

Q: Jalen Hurts' pass completion percentage last season was 61.3%. Based on relative frequency…

Q: A manufacturer tests a certain number of headsets that are produced each day. There is a 2.5% chance…

A: From the provided information, There is 2.5% chance of finding a defective headset. Sample size (n)…

Q: A phone company reports that 52 % of its customers subscribe to their high-speed internet service.…

Q: Please show your solution. A petroleum company exploring for oil has decided to drill 2 wells, one…

A: Given that P(first attempt) = 0.25 P(Second attempt | First attempt) = 0.85

Q: a. Develop an estimated regression equation that can be used to predict the risk of stroke given the…

A: In this question, we are examining the relationship between the risk of stroke and two independent…

Q: Lin, Kiran, and Diego are going to shoot 100 free throws each for practice. Based on their shooting…

A: The chances of Lin, Kiran, Diego of making each shots are P(E) = Number of favourable…

Q: A biologist estimate that 70% of the deer carry a type of tick. For a sample of 300 deer random,…

A: Given P=70% n=300

Q: 80% of teenagers have access to some social media. If you do a random survey of 400 teenagers, what…

Q: Kiara sets up a passcode on her smart phone, which allows for 7 digits. She was informed that using…

A: Given: A smartphone allows 7 digits password she is a digit twice makes the phone more secure.

Q: 2016, 75.8% of women aged 20-24 had no children. What is the chance that if you wanted to meet a…

A: Given that : In 2016, 75.8% of women aged 20-24 had no children. What is the chance that if you…

Q: In a recent article published by Scientific American found that only 82% of Millennials are certain…

A: We have given that Sample size n =75 Favorable cases x =68 Sample proportion p^=x/n =68/75 =0.9067

Q: The frequency of twin births has been increasing in recent years so that in 2022 about 4% of all…

A: From given in 2022 about 4% of all births were twins. and The probability of a birth being that of…

Q: In a test for ESP, the experimenter looks at cards that are hidden from the subject. Each card…

A: In this case, each of the subjects has the only option of guessing a card "correctly" (defined as…

Q: 1. A survey showed that 8% of Internet users age 18 and older report keeping a vlog. Referring to…

A: Answer) Giventhat:- P[X=vlogger]=0.08 P[X=non-vlogger]=0.92 P[Y=young adult|X=vlogger]=…

Q: In 2016, more than 200,000 students took the AP® Statistics exam. Of these students, 14% earned the…

A: From the provided information, 14% earned the highest score of 5 that is p = 0.14 Sample size (n) =…

Q: For this question, similarly to #2, we want to look at how many college stadiums were built in the…

A: Given that 15% of stadiums have just been built in the past 20 years and there is a sample of 20.…

Q: A 10-year study conducted by the American Heart Association provided data on how age, blood…

A: Given the data on how age, blood pressure, and smoking relate to the risk of strokes asRiskAgeBlood…

Question

100%

Video Video

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

In 2001, the Gallup poll found that 81% of American adults believed that therewas a conspiracy in the death of President Kennedy. In 2013, the Gallup pollasked 1,039 American adults if they believe there was a conspiracy in theassassination, and found that 634 believe there was a conspiracy ("Gallup newsservice," 2013). Do the data show that the proportion of Americans who believein this conspiracy has decreased? Test at the 1% level.
The gunner on the assault boat SS Minnie Chang fires six missiles at an attacking plane. Each has a 20% chance of being on target. If two or more shells find their mark, the plane will crash. At the same time, the pilot of the plane fires 10 surface-to-air rockets, each of which has a 0.05 chance of sinking the boat. If you want to live, would you rather be on the plane or on the boat?
A common lab test during a medical exam is a blood count. The two main aspects are counting the number of white blood cells and differentiating white blood cells into several categories. One of the categories is neutrophils. Suppose 60% of white blood cells are neutrophils in a healthy person. What is the probability of seeing 2 neutrophils in a sample of three white blood cells from a healthy person? What is the probability of seeing 2 or fewer?
The drug manufacturer claim that taking gemfibrozil is beneficial to reduce the chance of heart attacks. 2051 men took the medication, and a control group of 2030 men took a placebo. During the next five years, 56 men in the drug group and 84 men in the placebo group had heart attacks. We would like to compare the proportion of men who develop heart attacks between the drug group and the placebo group. What are the correct x1 and x2 values in order to calculate the pooled sample proportion? a) x1=2051, x2=2030 b) x1=2051, x2=84 c) x1=56, x2=2030 O d) x1=56, x2=84
You are analysing a factory. Stage 3 of the manufacturing process has a 45% chance of finishing on time. If it does finish on time, the chance of Stage 4 finishing late is 20%. The overall chance of Stage 4 finishing on time is 71.2%. What is the chance that Stage 4 finishes late if Stage 3 finished late? Round your answer to 2 decimal places.
If the probability of rain tomorrow is 65%, what is the probability that it will not rain tomorrow?
A project has a 60% of super success earning $50,000, a 15% chance of mediocre success earning $20,000, and a 25% probability of failure losing $30,000. What is the EMV of the project?
Please show your solution. A petroleum company exploring for oil has decided to drill 2 wells, one after the other. The probability of not striking oil in the first well is 0.25. Given that they strike oil in the first attempt, the probability of striking oil in the second attempt is 0. 85. What is the probabilty of striking oil in both wells?
In world cup soccer the probability that a soccer team makes a penalty kick goal is about 72.5%. If a team attempts five consecutive penalty kicks, what is the probability that they will make at least one of the five attempts
There is a 30% chance it will snow on any one of the next 5 days. What is the chance it will snow at least 2 of those days?
What is the probability that a randomly chosen individual would be less than 64.5 years of age? Show how you standardized the problem.
A recent study reported that the prevalence of hyperlipidemia is 30% in children. If 12 children were apart of this study, what is the probability that three are hyperlipidemia?