For this series of questions you will consider a large population of crabs in which 40% are infected with a parasitic worm.  Due to the large population, probabilities can be calculated as if we are sampling with replacement.  9d)What is the probability that if we take a sample of 7 crabs, 3 or 4 of them will be infected? 9e)What is the probability that if we take a sample of 7 crabs, more than 3 of them will be infected?

Q: An optometrist is checking the vision of students in a class. There are 20 students without glasses…

A: We have given that,  Students without glasses = 20  Students with glasses = 12  Total students =…

Q: A committee executive board is to be selected at random from a group of 10 people; 5 women and 5…

A: Given: Number of women = 5 Number of men = 5 Total people = 10

Q: what is the probability the he or she will answer correctly (a) at least 6 problems?

A:

Q: Lots of games like tennis have a concept of deuce, where if the game is ties at the end you have to…

A: The probability of winning the game is obtained below:From the given information, there are two…

Q: An urn has 10 marbles: 3 red, 7 black. If we draw a random sample of 4, what is the probability we…

A:

Q: Among a group of 22 stocks, suppose that 11 will perform above average and the other 11 will perform…

A: Let A be the event of all 4 stocks with above-average performance. Then P(A) is defined as: P(A) =…

Q: committee of 3 is to be chosen from 14, 10 females and 4 males, at random. Josue is one of the…

A: According to the combination rule, if r distinct items are to be chosen from n items without…

Q: With 5 professors and 15 students to choose from, what is the probability of choosing 12 people for…

A: The probability of choosing a committee of 2 professors and 10 students is approximately…

Q: ed to see if they were going to the Football game or basketball game tonight. The probability that…

A: Total number of students who were going to basketball and men = Total number who will go to…

Q: There are 6 red balls and 8 blue balls in a box. In this experiment, the balls will not be replaced,…

A: Given, 6 red balls and 8 blue balls in a box To find  The probability of 3 of them will be a red…

Q: Suppose you plan to take 3 courses next term. If you select them randomly from the listing of 12…

A: We have to find given probability.

Q: A committee of 3 people is selected at random from 5 men and 5 women. What is the probability that…

A:

Q: about 38% of the population have blood type-O positive. If you randomly choose 4 people, what is the…

A: It is given that p = 0.38 and n = 4. The probability mass function of the binomial distribution is…

Q: Jack has 10 chips numbered 1-10, what is the probability that he selects an even number or less than…

A:

Q: HIV and tuberculosis (Tb) are two diseases that can occur together. Suppose in a study population…

A: P(HIV) = 0.15 P(Tb) = 0.25 P(HIV and Tb) = 0.07

Q: series of cards is drawn from a deck (without replacement).  What is the chance that you get 2 cards…

A: Probability of drawing cards of spades and Hearts

Q: The strength of concrete depends to some extend to some on the method used for drying. Two different…

A: State the hypotheses. That is, there is no evidence to conclude that the mean strength of method 2…

Q: Suppose 38% of the teachers at a high school are male teachers. What is the probability that of your…

A: In question, Given that 38% of the teachers at a high school are male teachers. Then we'll find the…

Q: If 15% of students like tennis and I expect 500 new students on campus what is the probability that…

A: Probability that students like tennis, p=15% = 0.15 q=1-p= 1-0.15= 0.85 Sample size n=500…

Q: In a survey, 205 people indicated they prefer cats, 160 indicated they prefer dogs, and 40 indicated…

A: From the provided information, 205 people indicated they prefer cats, 160 indicated they prefer…

Q: 2. A box contains 8 green balls and 6 red balls. Five bal are selected at random, find the…

A:

Q: Express the confidence interval 18.7% < p < 34.9% in the form of p± ME. 26.8 ✓0% ± %

A: The confidence interval is given by 18.7% &lt; p &lt; 34.9%

Q: At a grocery store there are 45 employees there are 23 employees who are married 13 employees who…

A: There are totally 45 employees in a grocery store in which 23 employees who are married 13 employees…

Q: If the probability of being left handed is 0.23 and the probability of being right handed is 0.77…

A: Let X be the number left handed let p be the probability of being left handed  q be the probability…

Q: A couple plans to have four children. The father notes that the sample space for the number of girls…

A: Given information- We have given that, a couple plans for 4 children. The sample space for the…

Q: You wish to play a three-number lottery with your favorite data 8, 2 and 5.  After a number is…

A: Given dataThere are 3 numbersRepetition is allowedWe are drawing a single number with replacement,…

Q: If an unprepared student guess for 10 true-false questions, what is the probability they will get…

A:

Q: A comment of 2 people is to be chosen from 8 women and 6 men. What is the probability at least one…

A: Given Data: The number of people required in the community is: N=2  people The number of women…

Q: In a bulb factory, three machines, A, B, C, manufacture 60%, 25% and 15% of the total production…

A: Let D=defective productsGiven,P(A)=0.60P(B)=0.25P(C)=0.15P(D|A)=0.01P(D|B)=0.02P(D|C)=0.01

Q: 12 If 2 per cent of a certain brand of light bulbs are defective, find the probability that, in a…

A: As per given by the question, find the probability that in a random sample of 80 bulbs, a total 0,…

Q: A researcher has developed a regression model from fourteen pairs of data points. He wants to test…

A: Sample size (n)=14Level of significance α=0.01For two tailed test Find t  critical value

Q: I have 1 gray female, 5 gray male, 2 white female, and 2 white male mice. A biologist chooses 2…

A: From the given information, there are 1 grey female, 5 grey male, 2 white female and 2 white male…

Q: A committee of two people is to be chosen from five women and 4 men. What is the probability at…

A: Given that there are 5 women and 4 men. So there are total (5+4)=9 people. Given that at least one…

Q: In GC University 4% of boys and 1% of girls are taller than 6 feet and 60% of students are girls. If…

A:

Q: We roll 2 dice 4 times and we want to know the number of times the sum of the dice was 7. Find the…

A: When rolling a die, there are 6 possibilities i.e., 1, 2, 3, 4, 5, and 6.When rolling two dice,…