What is the probability of a z score greater than -1.97?

Q: What is the probability distribution if X~ B(3,0.82)?

A: Given: X~ B(3, 0.82)   Probability distribution is a function that describes the probability of all…

Q: What is the probability of choosing a number from 1 to 10 that is less than 5 or odd?

A: Solution

Q: Smoking leads to significant health problems, 20% of adults in Europe smoke. Consider a group of 250…

A: X has binomial distribution. X~B(n,p) Where n=250 and p=0.20 np and np(1-p) is greater than 5. then…

Q: What is the probability of having a family composed of 12 siblings all the same gender? (answers to…

A: Given the probability of having a family composed of 12 siblings all the same gender

Q: What is the probability of a z-score less than -0.02?

A: It is given that z-score is less than –0.02.

Q: What is the process of solving the question below in excel? Suppose a manufacturing process results…

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

Q: What is the probability that a randomly selected person from the population tests positive?

A: Let us define some events A : a person has cooties. B : a person does not have cooties. E : a person…

Q: probability of getting a total score of 15

A: We have to find out the probability of getting a total of 15.

Q: How do I find the z-score that corresponds to a cumulative probability of​ 0.975 using excel?

A: The normal distribution:A continuous random variable X is said to follow normal distribution with…

Q: Q9. What is the probability that a randomly chosen number among these data points is between 95 &…

A: Given that, Total number of data values nS=16

Q: What is the probability of selecting a sample with the proportion of females being 0.56 or greater?

A: here p =  proportion of female in US =  0.51  n = 500

Q: True or false? The probability of a Z score being less than 0 is 84%.

A: Solution

Q: What is the probability (in percent) of Blacky's 6th bark on the 10th stranger? (Use 4 significant…

A: Here  p = probability of blacky bark on stranger = 0.30 q = 1- p = 0.70

Q: What is the probability of scoring below a z-score of +2.91?

A: What is the probability of scoring below a z-score of +2.91?

Q: What is the probability of having no errors on a page?

A: Poisson distribution is a discrete probability distribution . It is the most widely used .

Q: What is the probability that a randomly chosen person from this study was tall, given that they were…

A:

Q: The probability that an individual is left-handed is 0.140. In a class of 15 students, what is the…

A: Here, n = 15 and p = 0.140.

Q: The probability of loosing a game was estimated as  0.6 . What is the probability to win this game?

A:

Q: 4. The percentage of Metro Manila households that have air conditioning unit is 16%. In a random…

A: The random variable X representing number of households having air conditioner follows binomial…

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

A: Given data: What is the probability that Z is greater than −0.28​?

Q: The probability that an individual is​ left-handed is 0.190. In a class of 27 ​students, what is…

A: From the provided information, Sample size (n) = 27 Probability that an individual is left-handed…

Q: What is the probability of getting a number that is less than 8? *

A: In the given spin there are 7 outcomes, out of which 7 numbers are less than 8.

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

A:

Q: (b) In the extended arm condition, what is the probability that a consumer has a choice score of 57…

A: Given:  For flexed arm condition: Consider X as a random variable that follows a normal…

Q: What is the symbol for the probability of making a Type I error?

A: Ist Kind of error: Rejecting null hypothesis, when the null hypothesis is true. Type I error:…

Q: Suppose the probability of success is p=31%. What is the probability of 7 successes in 8 trials?

A: Let x follows binomial distribution with parameters n = 8 and p = 0.31   The pdf of binomial…

Q: 8. Find the probability of getting a total score of 15 points in a throw of three identical dice.

A: To find the probability of getting a total score of 15 points in a throw of three identical dice.

Q: What is the probability that a randomly selected participant tasted peaches given that the…

A: Probability is the chance of occurrence of an event.

Q: ) What proportion of students studied more than 35 hours? ) What is the probability that a randomly…

A: Let X denote the time spent studying the week before final exams. Given that X follows N(mean = 24,…

Q: The probability of finding a gold card is 0.03. What is the probability that 1 out of 10 randomly…

A:

Q: What is the probability of drawing 4 red cards in a row from a standard deck of 52 cards? Express…

A: Deck consists of 52 cards n(S)=52 Deck consists of 26 Red cards n(E)=26 P(4 red cards in a row)=?

Q: What is the probability of sampling a score of    X = 55 or greater from a population with μ = 50…

A: Given: μ = 50 σ = 15 Thus, X ~ N(μ = 50, σ = 15)

Q: What is the probability that the sample mean cholesterol level is greater than 212? The probability…

A: Mean = 204and sd = 42.5

Q: What is the probability of selecting an applicant who has a score of at least 166?

A: Let X denote the GRE quantitative scores. Given that X follows N(mean = medain = 158, SD = 3), then…

Q: selected, what is he probability that the average sugar content is less than 37 grams?

A: Here distribution with Mean = 39 Standard deviation = 15 Now sample of 40 bottles are taken from…

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: 62% of Armenian students own a personal computer. What is the probability that the proportion of…

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

Q: A fair die is thrown 25 times. What is the probability of getting at least 8 “fives?”

A:

Q: What is the probability of getting an extra 1 damage point?

A: Here Given  10 Sided die is rolled once Now It has 1-10 numbers written And if it is landed on Prime…

Q: A manufacturer of aspirin claims that the proportion of headache sufferers who get relief with just…

A:

Q: What is the probability of randomly selecting a female respondent from the sample?

A: Given contingency table is:   Probability = number of favorable events/ Total number of events in…

Q: What is the probability that passing grade?

A: Given: To find: 1).Probability of choosing female got pass marks 2).Probability of choosing  male…

Q: 6. What is the probability of a z-score less than -0.02?

A:

Q: What is the probability of selecting a score greater than 50 from a positively skewed distribution…

A: The given values are, Since the distribution of X is not a bell shaped distribution , and we use…

Q: What is the probability of getting a head when tossing a coin?

A: GivenA coin is tossed

Q: What is the probability of obtaining a z score that is as extreme as or more extreme than 1.96?

A: Here we have to find z score that is as extreme as or more extreme than 1.96

Q: . When rolling 10 dice, what is the probability of rolling 7 sixes? How does this compare to the…

A: See the handwritten solution

Q: 4, the probability of scoring less than 30

A:

Q: Find the probability that the mean weight of computer chairs produced by Company 2 is more than the…

A: Here given data for two company of chair  Here use standard normal distribution table for…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.