Chapter 21.4, Problem 18P

Pls help ASAP

Pls help ASAP

Pls help ASAP

Arelli brought $52.75 to the state fair. She bought a burger, a souvenir, and a pass. The burger was  1 6  as much as the souvenir, and the souvenir cost  3 4  the cost of the pass. Arelli had $4.00 left over after buying these items.

plate is attached to its base by 6 bolts. Each bolt is inspected before installation, and the probability of passing the inspection is 0.9. Only bolts that pass the inspection are installed. Let X denote the number of bolts that are inspected in order to attach one plate. Find the probability that less than 7 bolts need to be inspected in order to attach the plate. Round answer to four decimal places. distribution can be used here with parameters r =6 and p = The requested probability is

The analysis of results from a leaf transmutation experiment (turning a leaf into a petal) is summarized by the type of transformation completed: A naturalist randomly selects three leaves from this set without replacement. Total Textural Transformation Yes No Total Yes 243 26 269 Total Color Transformation No 13 18 31 Total 256 44 300 Let X represent the number of leaves that have undergone both transformations. The appropriate probability distribution of X is a distribution. The parameters are population size N = size n = number of events K = and sample The probability that at least one leaf has undergone both transformations is probability to four decimal places.) X has a N = K= n = The requested probability is distribution. (Round the

The life time of a certain battery is modeled with the Weibull distribution with shape parameter ẞ=2 and scale parameter 8-10 hours. Determine the mean time until failure of batteries. (Round the answer to one decimal place.) hours

Consider the probability distribution below. 0 1 3 f(x) 0.3 0.3 0.4 E(X)=1.5. The variance of XV (X) equals 1.65 ○ 1.28 1.56 2.33

Consider the probability distribution below. 10 20 30 40 f(x) 0.3 0.4 0.2 0.1 The expected value of X equals 100 ○ 25 ○ 18 ○ 21