Suppose that 20% of the adult women in the United States dye or highlight their hair. We would like to know the probability that a SRS of size 200 would come within plus or minus 3 percentage points of this true value. In other words, find probability that ˆ p takes a value between 0.17 and 0.23.

Q: The average number of cockroaches per hectares in a 7-hectares wheat field is estimated to be 11.…

A: Let , X be the number number of cockroaches per hectares in a 7-hectares Here , X has Poisson…

Q: A recent survey found that 70% of all adults over 50 wear glasses for driving. In a random sample of…

A: Given :70% of all adults over 50 wear glasses for driving

Q: If a researcher wants to estimate the proportion of customers of a coffee shop that favor the new…

A: Given data: Margin of error ( E) = 0.08 Population proportion = 0.75 Confidence level = 0.95 To find…

Q: What is the probability of a stroke over the next 10 years for John Smith, a 68-year-old smoker who…

A: Introduction: The Risk of Stroke (%) is the response variable, being predicted using the predictor…

Q: An insurance company has written 100 policies for $75,000, 500 policies for $20,000, and 1000…

A:

Q: An engine encounters a standard environment with a probability of 0.95, and a severe environment…

A: Let M be the event representing an engine encounters a standard environment. Let N be the event…

Q: According to your textbook, a(n) __________ test is a test of the probability that a particular…

A: Question: An  __________ test is a test of the probability that a particular calculated value could…

Q: A bottle maker believes that 10% of his bottles are defective. If the bottle maker is right, what…

A: Obtain the probability that the proportion of defective bottles in a sample of 599 bottles would be…

Q: Suppose a birth control pill is 97% effective in preventing pregnancy. (Round your answers to three…

A: Given, birth control pill is 97% effective in preventing pregnancy. (a) 0.97^200 = 0.0023 = 0.002

Q: d. Based upon a smaller sample of only 150 St. Paulites, what is the probability that the sample…

A: Given Information: Population proportion of St. Paulites who drink bottled water more than once a…

Q: For a certain horse race, the odds in favor of a certain horse finishing in second placeare given…

A: Since odds in favor of a certain horse finishing in second place are given as 73 to 27 so the number…

Q: If X ~ exp ((b), calculate the probability that X exceeds its expected value.

A: It is given that X~Exp(b), the PDF PDF of X is given by,

Q: In a recent study nationwide, it was found that 51% of people lost their keys in the past year. If…

A:

Q: Suppose 57% of the population has a college degree. If a random sample of size 770 is selected,…

A: the pdf of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: From experience, an airline knows that only 72% of the passengers booked on a flight from New York…

A: Given, p = 0.72 n = 7 r = 4 From the given information it follows binomial  distribution.       To…

Q: a) What is the probability that a single car of this model emits more than 86 mg/mi of NOX + NMOG? )…

A: a.) Let X be the random variable representing the emission of NOX+ NMOG by a single car. Here, X~…

Q: The weekly average number of airplane crashes is 1. Whatis the probability that there will be (a) at…

A: Given Data: Let X be the random variable representing weekly average number of airplane crashes X ~…

Q: Suppose a birth control pill is 98% effective in preventing pregnancy. (Round your answers to three…

A: Let us denote X= number of non-pregnant women  n= number of trials= 100 p= probability of a success=…

Q: A recent study reported that 30% of the residents of a particular community lived in poverty.…

A:

Q: From experience, an airline knows that only 73% of the passengers booked on a flight from New York…

A: Given,n=7p=0.73q=1-0.73=0.27A random variable X~Binomial(n=7 , p=0.73)P(X=x)=Cx7 0.73x0.277-x  ;…

Q: Suppose that a policeman with a radar gun is watching traffic pass on a street where it is the case…

A: Given that : The policeman with a radar gun is watching traffic pass on a street where it is the…

Q: A cafe receives an average of 4 orders of Mocha Frappe every 5 minutes. What is the probability of…

A: Poisson distribution : The random variable x defines number of events that occur in an interval…

Q: Suppose that the average number of accidents occurring weekly on a par- ticular stretch of a highway…

A:

Q: Suppose that a policeman with a radar gun is watching traffic pass on a street where it is the case…

A:

Q: Select the correct interpretation of the probability of guessing the date of his birth, given that…

A:

Q: e average incidence is 2 per million people. What is the probability that a city of 1 million people…

A: By using Poisson distribution:

Q: In a recent year, there were 2,515,458 deaths, and 787,650 of them were due to cardiovascular…

A: Total number of deaths = 2515458Number of deaths due to cardiovascular disease = 787650…

Q: A pharmacist receives a shipment of 18 bottles of a drug and has 3 of the bottles tested. If 5 of…

A: 20) A pharmacist receives of shipment of 18 bottles of a drug and 3 of the bottles are tested. If 5…

Q: The odds against an event E occurring are 4 to 3. What is the probability that E will occur?

A: Odds against of event E=4:3, where 4-non occurred and 3-occured

Q: If a "fair" coin is tossed 1,000,000 times, one would expect the probability (not the number of…

A: here given, The Law of large numbers states that as the number of repetitions of an experiment n…

Q: If a probability or 2 place decimal like area is found to be 0.77 or 1.35 0.6064, what is the z…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Suppose 50% of the children in a school are girls. If a sample of 890 children is selected, what is…

A: 26. Given that 50% of the children in a school are girls. And there are 890 children is selected.…

Q: Suppose there is a disease, whose average incidence is 1 per million people. What is the probability…

A: Given Suppose there is a disease, whose average incidence is 1 per million people.

Q: hat's the probability that if a student who was surveyed was randomly selected that: be at the end…

A: A: End of the first year The probability that if a student who was surveyed was randomly selected…

Q: In a certain study, the chance of encountering a car crash on the road is stated as 20%. Express…

A: We know that for an event E the probability of the event E is given by; P(E)=Number of favourable…

Q: An insurance company has written 50 policies for ​$125,000​, 100 policies for ​$30,000​, and 250…

A: we can find n = (50*125000+100*30000+250*10000) = 11750000

Q: What is the probability that Z is less than −0.28 or greater than 1.04​?

A: We have to find , Probability that Z is less than -0.28 or  Probability that Z is greater than 1.04…

Q: From experience, an airline knows that only 72% of the passengers booked on a flight from New York…

A: Let p=Probability of success i.e someone showing upp=0.72n=sample size=6x=number of people that…

Q: In a new fiber-optic communication system, transmission errors occur at the rate of 2.5 per ten…

A: Obtain the probability that more than five errors will occur during the next minute.   The…

Q: that promises a profit of $37,000 with ap or a loss (due to lack of tourists, disinteres sters etc.)…

A: Given that the national park t-shirts is considering a sales that  promises a profit of $37000 with…

Q: with a mean life of 500 hours. Suppose that the component was in operation for 400 hours. What is…

A: Since you have asked multiple question, according to our guidelines we will solve the first question…

Q: A recent survey by the American Cancer Society shows that the probability that someonelis a smoker…

A: 0.29 is the probability that someone is smoker. The probability that someone have lung cancer and…

Q: If a seed is planted, it has a 80% chance of growing into a healthy plant.If 6 seeds are planted,…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: If the weight (in grams) of cereal in a box of Lucky Charms is N(470,5), what is the probability…

A:

Q: Suppose it has been determined that the probability is 0.8 that a rat injected with cancerous cells…

A: Suppose it has been determined that the probability that a rat injected with cancerous cells will…

Q: from previous published studies, the probability that a pine snake hatched in a zoo will survive to…

A: Solution: Let X be the number of pine snakes that will survive to maturity and n be the sample…

Q: Suppose you called your local pharmacy to refill a prescription and are put on hold. Assume that the…

A:

Q: At a store, the average number of customers entering is 25 persons per half an hour. What is the…

A:

Q: By some estimates, twenty-percent (20%) of Americans have no health insurance. Sample of 15…

A:

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.