3. Which is a continuous random variable? X = "number of petals on a sunflower" Z = "results of drawing three cards from a standard deck of cards" Y = "exact age of your classmates" W = "number of apps on your phone"

Q: Provide an appropriate response. The random variable x represents the number of computers that…

A: Mean E[x] = ∑xP(x)

Q: 33% of the Population has 20/20 vision if 70 individuals are selected at random from the Population…

A: Sample size : n = 70P(20/20 vision) : p = 0.33x = Number of people with 20/250 visionMean of X :  =…

Q: What is the probability that the sampling error would be less than or more than 1.5 seconds

A: Given:mean µ = 30standard deviation σ= 2sample size n = 16 Let x̄ represent the sample mean time,…

Q: Suppose i have an unfair coin and it lands on heads 75% of the time.  If I flip this coin four times…

A: Obtain the probability of getting only 1 head.   The probability of getting only 1 head is obtained…

Q: In experiments, we truly hope to find an increase in extraneous influence within-groups variance…

A: Introduction: It is required to choose the correct option regarding experiments.

Q: What is random error?

A: In statistics and inference theory, there are two types of error which are there and cannot be…

Q: What increases the likelihood that our a random sample will be representative of the population? O…

A:

Q: How can I find the Sum of Squares, Variance, and Standard Deviation for the following population.…

A: Here, n is the number of observations. Hence, n is 7. The mean is calculated below.

Q: What is the probability of observing a z score greater than 3?

A: From the provided information, The z score is greater than 3. That is P (z > 3)

Q: How to find the mean of the random variable x

A: The mean of the random variable x will depend on the distribution of x. Every distribution has its…

Q: E(7) = (to 1 decimal) (to 4 decimals) = 20

A:

Q: Person 1 (X) = 1 hour, z = -0.5 Person 2 (X) = 3 hours, z= 0.5 Person 3 (X) = 4 hours, z= 1 4. Using…

A: The question is about normal dist. Given : Person 1 ( X ) = 1 hr. , z = -0.5 Person 2 ( X ) = 3 hr.…

Q: Bootstrap Sample Here is a random sample of taxi-out times (min) for American Airlines flights…

A: For the given situation, different bootstrap samples can be obtained. One of the possible bootstrap…

Q: Given a normal population with mean = 39 and variance = 16, what is the probability of obtaining an…

A:

Q: Total blood volume (in ml) per body weight (in kg) is important in medical research. For healthy…

A: (a) From the information given, the level of significance is 0.01. Thus, the level of significance…

Q: Find the standard deviation for each binomial random variable  n=36, ?= .75 n=75, ?= .55 n=26, ?=…

A: Givenn=36 p=0.75x~Binomial(n=36,p=0.75)P(X=x)=(nx)×px×(1-p)n-x    ; x=0,1,...,n

Q: What is the variance of random variables X, the outcome of rolling a fair die

A: The sample of rolling a fair die is {1,2,3,4,5,6}.

Q: those with a valid driver's license drive an American-made automobile at the a = 0.05 level of…

A: