Assume that when adults with smartphones are randomly​ selected, 49​% use them in meetings or classes. If 20 adult smartphone users are randomly selected, find the probability that exactly 15 of them use their smartphones in meetings or classes.   The probability is: (round to 4 decimal places)

Q: The probability that a lab passes a health and safety inspection is 97%.  A health and safety…

A: Let X: number of labs.X has binomial distribution because trials are finite, trials are independent…

Q: Assume that when adults with smartphones are randomly selected, 47% use them in meetings or classes.…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: Assume that when adults with smartphones are randomly​ selected, 60% use them in meetings or…

A:

Q: 31% of all college students major in STEM (Science, Technology, Engineering, and Math). If 39…

A: Given,n=39p=0.31Let X=no.of students major in STEM.X~Binomial(n=39 , p=0.31)P(X=x)=39x…

Q: Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes.…

A: Given, P(Adults using smart phones in meetings or classes)= p = 54% = 0.54 Sample size n = 5 exactly…

Q: Assume that when adults with smartphones are randomly selected, 36% use them in meetings or classes.…

A: Given: p=36%=0.36 n=8 According to binomial probability: PX=x=Cxnpx1-pn-x

Q: One card is selected at random from a standard deck of cards (52 cards in a deck). Determine the…

A: 1 card is drawn, what is the probability that, 1 card is 5 or 1 card is HEARTTotal number of ways of…

Q: The table summarizes results from 987 pedestrian deaths that were caused by autornobile accidents.…

A:

Q: A die is thrown 5 times. Z= Number of Even numbers. Find the probability of getting exactly 3 even…

A: Givena die is thrown 5 timesn=5probability of getting even number =36=0.5          (since there are…

Q: The probability that a student in Oakland will receive a B in Kathy Williamson's statistics class is…

A: Given that, The probability that a student in Oakland will receive a B in Kathy Williamson's…

Q: Two cards are selected from a standard deck of 52 playing cards. The first card is not replaced…

A: We know that  There are 52 card in the deck in which they divided into two color i.e red(26) and…

Q: Assume that when adults with smartphones are randomly selected 52% use them in meetings or classes.…

A:

Q: Assume that when adults with smartphones are randomly selected, 55% use them in meetings or classes.…

A: It is given that the random variable X i.e, smartphones in meetings or classes follows Binomial…

Q: Suppose a jar contains 12 red marbles and 35 blue marbles. If you reach in the jar and pull out 2…

A:

Q: 27% of all college students major in STEM (Science, Technology, Engineering, and Math). If 50…

A: p( major in STEM)=p=0.27q=1-p=1-0.27=0.73n=50x= no. of them major in STEMhere data follows the…

Q: at exactly 2 of them use their smartphones in meetings or classes.

A: Given that  39% of adults using smartphones in meetings or classes. P= 0.39 Random sample size (n) =…

Q: One card is selected at random from a deck of cards. Determine the probability of selecting a card…

A:

Q: If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was…

A: The data is given by   Pedestrian intoxicated (Yes) No Total Driver intoxicated (Yes) 44 70 114…

Q: A poll showed that 50% of Americans say they believe that life exists elsewhere in the galaxy. What…

A: here given , A poll showed that 50% of Americans say they believe that life exists elsewhere in the…

Q: A box at a miniature golf course contains 77 red golf balls, 88 green golf balls, and 33 yellow golf…

A: Case (i): It is given that there are 77 red balls, 88 green balls, and 33 yellow balls. The total…

Q: Assume that male and female births are equally likely and that the birth of any child does not…

A: Given that, Male and female births are equally likely and that the birth of any child does not…

Q: Zion Williamson makes 65% of his freethrow attempts. Calculate the probability that he makes exactly…

A: The objective of this question is to calculate the probability that Zion Williamson makes exactly 6…

Q: Assume that when adults with smartphones are randomly selected, 64% use them in meetings or classes.…

A: Given, sample size = n = 8 Probability = p = 64% = 0.64 Number of smartphones users use their…

Q: Assume that when adults with smartphones are randomly​ selected, 39​% use them in meetings or…

A:

Q: The table summarizes results from 988 pedestrian deaths that were caused by automobile accidents.…

A: The table summarizes results from 988 pedestrian deaths that were caused by automobile accidents.…

Q: The probability that a person living in Manila owns an air-conditioner is 0.04. find the probability…

A: The probability distribution for the nth success on the xth trail is,Where  n is the number of…

Q: If half of the 100 passengers are​ men, find the probability that the mean height of the 50 men is…

A: The mean is 69 and standard deviation is 2.8.

Q: A bag contains 3 pink gumballs, 4 red gumballs, and 2 green gumballs. Find the probability that a…

A:

Q: Assume that when adults with smartphones are randomly selected, 36% use them in meetings or classes.…

A: We have to find given probability..

Q: In a sample of 445 cars, stopped at a road block, only 69 of the drivers had their seat belts…

A: In a sample of 445 cars, stopped at a road block, only 69 of the drivers had their seat belts…

Q: ssume that when adults with smartphones are randomly selected, 45% use them in meetings or classes.…

A: given data, p(use smartphones in meeting or classes)=p=0.45q=1-p=1-0.45=0.55n=8x= no. of smartphone…

Q: A telephone switch board in a firm receives on a average 90 calls per hour. Find the probability…

A: X~ Poisson (lemda=90) Pd.f. of X is given by, p(x)= e-lemda(lemda)x/X!

Q: Assume that when adults with smartphones are randomly​ selected, 57​% use them in meetings or…

A: Let X be the number of adults use their smartphones in meetings or classes which follows binomial…

Q: Assume that when adults with smartphones are randomly​ selected, 57​% use them in meetings or…

A: Given: Number of samples (n) = 20 Probability of success (p) = 0.57 Probabilty of failure (q) = 1-p…

Q: A bag contains 20 white marbles, 6 red marbles, 11 blue marbles, and 8 yellow marbles. If a marble…

A: White marbles = 20 Red marbles = 6 Blue marbles = 11 Yellow marbles = 8 Total marbles = 20 + 6 +11 +…

Q: In a class, the probability that a student owns a laptop is 0.2. Find the probability that the 5th…

A: We will consider the case of having a laptop as a success.  Probability of success=  0.2 (given) So…

Q: The probability that a famous basketball player will score a basket on the free throw line in 60%.…

A: Here, n = 13 and p = 0.60.

Q: Assume that when adults with smartphones are randomly selected, 57% use them in meetings or classes.…

A: Let "X" be the adults who use their smartphone in meeting or classes. I will use excel formula…

Q: n applicant is selected at random, what is the probability that he/she passes the academic…

A: Given:     Work Experience standards      yes  No  Total Academic Achievement Standards  yes…

Q: Assume that when adults with smartphones are randomly​ selected, 35​% use them in meetings or…

A:

Q: If the probability that an individual will suffer a bad reaction to a given vaccine is 0.19.…

A:

Q: Assume That when adults with smart phones are randomly selected, 52% use them in meetings or…

A: Solution: Let X be the number of number of adult smart phone users use their smart phones in meeting…

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.