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Taco Bell has decided to keep their doors open all night. There are 25 employees that have volunteered for the night shift. a) If a night crew consists of 8 employees, how many different crews are possible? b) If the employees are ranked 1,2,...,25 in order of competence, how many of these crews would not have the best employee? c) How many of the crews would have at least 1 of the 10 best employees? d) If one of these crews is selected at random to work on a particular night, what is the probability that the best employee will not work that night?
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2 months ago
HELP ME can't figure this out. Please help
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2 months ago
what are the first 300 digits of pie first answer is brainiest
General
2 months ago
5. Bart is a student in a History class. In order for Bart to receive an A grade for the course, he must score higher than an 85 on the final exam (out of a possible 1 to 100 score). What is the probability that Bart will not score higher than an 85 and receive an A in the course ?
General
2 months ago
Two projectiles are thrown with the same initial speed, one at an angle θ with respect to the level ground and the other at angle 90° − θ. Both projectiles strike the ground at the same distance from the projection point. Are both projectiles in the air for the same length of time?
General
2 months ago
The coefficient of determination, r squared, is ____. a. a number that indicates how well data fits the statistical model b. a number that must be close to zero to be useful c. the same as the slope of the linear regression d. the same as the error term in a linear regression
General
2 months ago
Aaron and Jonathan take turns shooting a free throw, with Aaron going first. Whoever makes the first shot wins. The game continues until someone makes the shot. Aaron has a 40% chance of making a free throw, while Jonathan has a 50% chance. What is Aaron’s chance of winning the game?
General
2 months ago
Rework problem 35 from the Chapter 2 review exercises in your text, involving auditioning for a play. For this problem, assume 9 males audition, one of them being Winston, 5 females audition, one of them being Julia, and 6 children audition. The casting director has 3 male roles available, 1 female role available, and 2 child roles available.
General
2 months ago
Marbles are being drawn without replacement from a bag containing 10 marbles. (a) How many samples of 4 marbles can be drawn? (b) How many samples of 3 marbles can be drawn? (c) If the bag contains 4 yellow, 3 white, and 3 blue marbles, how many samples of 2 marbles can be drawn in which all marbles are blue
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2 months ago
stanford Polynomial differentiation. Suppose p is a polynomial of degree n − 1 or less, given by p(t) = c1 + c2t + · · · + cntn−1. Its derivative (with respect to t) p′(t) is a polynomial of degree n−2 or less, given by p′(t) = d1 +d2t+···+dn−1tn−2. Find a matrix D for which d = Dc. (Give the entries of D, and be sure to specify its dimensions.)
General
2 months ago
Jackson wants to have $18,000 available to buy a motorcycle in three years. How much should Jackson save each month if he earns 5% interest, compounded monthly?
General
2 months ago
Which graph represents the piecewise - defined function ? y = -x -4 if x < -1 2x +1 if x ≥ -1 Any help counts , thanks .
General
2 months ago
If a basket of goods and services used to calculate CPI contains 2 pairs of socks at $2 each and 1 pair of shoes at $50, what will the CPI for year 2 be if the 2 pairs of socks cost $2.05 and 1 pair of shoes costs $51?A. 54.00B. 55.10C. 98.00D. 102.04
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2 months ago
Lena will rent a car for the weekend. She can chose one of two plans. The first plan has an initial fee of $49.00 and costs and additional $0.15 per mile driven. The second plan has an initial fee of $40.00 and cost an additional $0.17 per mile driven. For what amount of driving do the two plans costs the same? What is the cost when the two plans costs the same?
General
2 months ago
When establishing the confidence interval for the average weight of a cereal box, assume that the population standard deviation is known to be 2 ounces. Based on a sample, the average weight of a sample of 20 boxes is 16 ounces. The appropriate test statistics to use is ________.A) pB) tC) zD) χ
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2 months ago
Police use the formula: v = √ 20 L to estimate the speed of a car, v , in miles per hour, based on the length, L , in feet, of its skid marks when suddenly braking on a dry, asphalt road. At the scene of an accident, a police officer measures a car's skid marks to be 194 feet long. Approximately how fast was the car traveling? Round your answer to the nearest tenth (one decimal place) of a unit.
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2 months ago
A toy manufacturer wants to know how many new toys children buy each year. Assume a previous study found the standard deviation to be 1.5. She thinks the mean is 6.9 toys per year. What is the minimum sample size required to ensure that the estimate has an error of at most 0.11 at the 80% level of confidence? Round your answer up to the next integer.
General
2 months ago
Twelve basketball players, whose uniforms are numbered 1 through 12, stand around the center ring on the court in an arbitrary arrangement. Show that some three consecutive players have the sum of their numbers at least 20.
General
2 months ago
The life of a red bulb used in a traffic signal can be modeled using an exponential distribution with an average life of 24 months. The maintenance worker inspects the signal every year. • What is probability that the red bulb will need to be replaced at the first inspection? • If the bulb is in good condition at the end of 18 months, what is the probability that the bulb will be in good condition at the end of 24 months? HINT: Use P(A | B) = P(A∩B) P(B) • If the signal has six red bulbs, what is the probability that atleast one of them needs replacement at the first inspection? Assume distribution of lifetime of each bulb is independent.
General
2 months ago
A rectangle has a perimeter of 28 units, an area of 48 square units, and sides that are either horizontal or vertical. If one vertex is the point (-5,-7), and the origin is in the interior of the rectangle, find the vertex of the rectangle that is opposite is (-5,-7)
General
2 months ago
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