Stress at work: In a poll conducted by the General Social Survey. S0% of respondents said that theair jobs were sometimes or always stressful. Two hundred workers are chosen at random. Use the TI-84 Plus calculator as needed. Round your answer to at least four decimal places. (a) Approximate the probability that 165 or fewer workers find their jobs stressful. (b) Approximate the probability that more than 150 workers find their jobs stressful. (c) Approximate the probability that the number of workers who find their jobs stressful is between 153 and 160 indusive. Part 1 of 3 The probability that 165 or fewer workers find their jobs stressful is Part 2 of 3 The probability that more than 150 workers find their jobs stressful is

Q: Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and…

A: The given values are:Proportion of U.S. adults with high blood pressure, p = 0.3Sample size, n =…

Q: Sixty percent of consumers prefer to purchase electronics online. You randomly select 8 consumers.…

A: Let x be follows binomial distribution with parameters n = 8 and p = 0.60   The pdf of binomial…

Q: A poll showed that 49.2% of Americans say they believe that statistics teachers know the true…

A: Given data:: The probability of the Americans who believe that statistics teachers know the true…

Q: e following data were gathered for 110 workers in two departments. Of these workers, 48 were in…

A: Note: - In the uploaded image there is only part (a).  We have given that Total workers in both…

Q: Show formula please and how to do it on a TI-84 calculator. Thank you.    Giving a test to a group…

A: Given A test to a group of students, the grades and gender    A B C Total male  3 18 7 28…

Q: An assessment consists of a true/false question followed by a true/false question. If both questions…

A: Given that an assessment consists of a true/false question followed by a true/false question.

Q: A poll showed that 68.5% of Americans say they believe that Marilyn Monroe had an affair with JFK.…

A: Given information- Percentage of Americans believe that Marilyn Monroe had an affair with JFK =…

Q: In a large city, 70% of people own a cell phone. A sociologist wishes to study the impact cell…

A: The objective of this question is to find the probability that between 33 and 36 people out of a…

Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: A survey among Harvard students was conducted. It is about their starting position when they sleep…

A: Do the collected data represent a sample or population? Explain your answer.

Q: The time it takes for an airline to get the luggage to the airport baggage carousel after a flight…

A: Let X: The time takes for the luggage to reach the airport baggage carousel.X has a uniform…

Q: How statistical tests are used?

A:

Q: The mean score for one of the classes was found to be 76.5. Which class do you think is more likely…

A: If the distribution is symmetric then mean=median=mode.

Q: If a probability or 2 place decimal like area is found to be 077 or - 1.09 0.4377, what is the z…

A:

Q: Looking at the Residual Plot for Blood Pressure, is there evidence of a possible outlier? Group of…

A: In excel first enter the data as: For the smoker variables 0 denotes "No" and 1 denotes "Yes".

Q: If you change the a level from .05 to .01, does the probability of making a Type I error increase,…

A: According to the given information in this questionWe need to identify the correct option

Q: ind the probability that a voice recorder will last between 2.8 and 6 years. Find the 70th…

A: Let X denote the voice recorder and it follows normal distribution with mean of μ=4.1 years and…

Q: We are asked to find the values that separate the middle 60% of the population from the top and…

A: In a normal distribution, the z-score is a measure of how many standard deviations an element is…

Q: Question #1112 percent of U.S. residents are in their thirties. Consider a group of eight U.S.…

A: X: Number of . residents are in their thirtiesNown= number of residents in group=8p=P(in their…

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.41%. A random sample of 31 of…

A: Guven:Mean (µ) = 2.41Standard deviation (σ) = 1.36Sample size (n) = 31

Q: A certain disease has an incident rate of 0.5%. If the false negative rate is 4% and the false…

A: Given that the false-negative rate is 4%. That means the probability of having the disease when the…

Q: The average count calculation errors at a local accounting firm per 12-h shift are 2.8. What is the…

A: Given that : λ=2.8

Q: student scored in the 75th percentile on the SAT. What does that mean?

A:

Q: Roy is 4 years old and in the 69th percentile for neight in his age group. Vhat does this mean? Roy…

A: The percentile is used to measure the location of a data set.

Q: The table summarizes results from 983 pedestrian deaths that were caused by automobile accidents.…

A: Multiplication rule is : P(A and B)=P(A)*P(B) Given data is : Driver  intoxicated Pedestrain…

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A:

Q: The table summarizes results from 978 pedestrian deaths that were caused by automobile accidents.…

A: Pedestrian Intoxicated   Total DriverIntoxicated Yes No   Yes 52 72 124 No 263 591 854…

Q: John runs a computer software store. Yesterday he counted 132 people who walked by the store, 69 of…

A: GivenNo.of people who walked by the store=132No.of people came into the store=69No.of people bought…

Q: What is the probability the pedestrian was not intoxicated

A: Given data The table summarizes results from 990 pedestrian deaths   Driver  intoxicated?…

Q: Question #10Twelve percent of U.S. residents are in their thirties. Consider a group of six U.S.…

A: X: Number of . residents are in their thirtiesNown= number of residents in group=6p=P(in their…

Q: Explain the concept of probability and statistics.

A: Statistics: Statistics refers to data and the methods of collecting numerical data, analyzing it,…

Q: If he serves 15 times, what is the probability that he gets exactly 9 first serves in

A: Here use binomial distribution

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.23%. A random sample of 34 of…

A:

Q: You buy a lottery ticket that costs $20. There are only 100 tickets available to be sold in this…

A: The amount for a lottery ticket is $20.

Q: An earth-conscious clothing store offers a 15% discount if you bring in a bag full of old clothing…

A: From the given information, n=20 and p=0.69.

Q: Emma loves Butterfinger bars and recently ate a bar that only weighed 58 grams. Based on the…

A: P (z < -1.67) = 0.0478Explanation:z = (x - µ)/σ = (58 - 60)/1.2 = -1.67 P (z < -1.67) = 0.0478…

Q: For example, let us assume that the mean quantity of cholesterol in eggs is 185 milligrams with a…

A:

Q: A mobile phone brand has a mean time of failure that equals to 1000 days. What is the probability…

A: Its exponential distribution

Q: In a poll, 461 out of 1939 people said that they checked their email multiple times per day. What is…

A:

Q: In a Calculus class, the final exam scores were normally distributed with a mean of 63 and a…

A: Given: The value of mean is, μ=63. The value of standard deviation is, σ=5. The objective is to…