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MATH SOLVE
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A certain type of flashlight requires two type-D batteries, and the flashlight will work only if both its batteries have acceptable voltages. Suppose that 90% of all batteries from a certain supplier have acceptable voltages. Among fifteen randomly selected flashlights, what is the probability that at least fourteen will work? (Round your answer to three decimal places.)
General
4 months ago
A marketing executive is studying Internet habits of married men and women during the 8am – 10pm time period on weekends ("prime Internet time"). Based on past data, he has determined that husbands are on the Internet 10% of the time during prime Internet time. It has also been determined that when the husband is on the Internet during prime Internet time, 40% of the time the wife is also on the Internet. When the husband is not on the Internet during prime Internet time, the wife is on the Internet 20% of the time. If the wife is on the Internet during prime Internet time, what is the probability that the husband is also on the Internet?
General
4 months ago
g let X be a normally distributed random variable with mean 3 and variance 4. a) Let Y = 5X+2. What is the distribution of Y? What are its mean and variance? b) Find P(Y<10). Find P(X<10). c) What is the 99th percentile of the distribution of Y? d) What is the 99th percentile of the distribution of X? e) What is the distribution of W = exp(Y)? What are its mean and variance?
General
4 months ago
What must be true to prove that q ⊥ n? A. The slope of q must be the reciprocal of the slope of n. B. The slope of q must be the negative reciprocal of the slope of n. C. The slope of q must be the slope of n multiplied by –1. D. The slope of q must be the slope of n multiplied by –1n.
General
4 months ago
A store sells two types of copy machines: compact (low capacity) and standard (which takes more space). The store can sell up to 90 copiers a month. A maximum of 1080 cubic feet of storage space is available. A compact copier requires 6 cu. ft. of storage space, and a standard copier requires 18 cu. ft. The compact and standard copy machines take, respectively, 1 and 1.5 sales hours of labor. A maximum of 99 hours of labor is available. The profit from each of these copiers is $60 and $80 respectively. What is the maximum profit? Round your answer to the nearest whole dollar. Do not include a dollar sign or comma in your answer.
General
4 months ago
What is the slope? helpppp?
General
4 months ago
The mean distance from the Sun to Earth is 9.29x10^7. Jupiter’s mean distance from the Sun is 4.8388x10^8. What is the difference etween these two distances in miles?A. 4.3902 x 10^1B. 5.7678 x 10^8C. 3.9098 x 10^8D. 3.9098 x10^7
General
4 months ago
On a coordinate plane, a parabola opens up. It goes through (negative 1, 0), has a vertex at (1, negative 4), and goes through (3, 0).Which describes all of the values for which the graph is positive and decreasing?all real values of x where x < −1all real values of x where x < 1all real values of x where 1 < x < 3all real values of x where x > 3
General
4 months ago
The weight of fish in Lake Paradise follows a normal distribution with mean of 7.5 lbs and standard deviation of 2.5 lbs. a. What proportion of fish are between 9lbs and 12lbs? Give your answer to 3 decimal places. b. Alex boasts that he once caught a fish that was just big enough to be in the top 3% of of the fish population. How much did his fish weigh? Give your answer to 2 decimal places. c. If one catches a fish from the bottom 20% of the population, the fish must be returned to the lake. What is the weight of the smallest fish that one can keep? Give your answer to 2 decimal places.
General
4 months ago
Consider the following game: A player throws a fair die repeatedly until he rolls a 2, 3, 4, 5,or 6.In other words, the player continues to throw the die as long as he rolls Is. When herolls a "non-1", he stops. (Show your work and circle your final answers).a) What is the probability that the player tosses the die exactly three times?b) What is the expected number of rolls needed to obtain the first non-1?c) If he rolls a non-1 on the first throw, the player is paid $1. Otherwise, the payoff is doubledfor each 1 that the player rolls before rolling a non-1. Thus, the player is paid $2 if he rolls a 1followed by a non-1; $4 if he rolls two Is followed by a non-1; $8 if he rolls three Is followed bya non-1; etc. In general, if we let Y be the number of throws needed to obtain the first non-1,then the player rolls (Y-1) Is before rolling his first non-1, and he is paid 2^{Y-1} dollars. Whatis the expected amount paid to the player?
General
4 months ago
50 pts help! Function g is transformation of function f. What is the equation of function g?
General
4 months ago
A private tutoring company charges $20 for a 1-hour session. Currently, 300 students are each tutored for an hour each week. Since the company is losing money, the owner has decided to increase the price. For each 50¢ increase, she estimates that 5 fewer students will participate. If the company needs to bring in $6,240 per week to stay in business, what price must be charged for a 1-hour tutoring session to produce this amount of revenue?
General
4 months ago
Jaime is 9 years old today. Assume that on every one of his birthdays sincethe first, Jaime has blown out a number of candles equal to his age. (O.K., SOhe had a little help on the first few birthdays. Still assume that he blew out theright number of candles every year.)The total number of candles Jaime has blown out in his life equals the sum ofthe arithmetic series 0 + 2+ 3+ 4+ 5+ 6+ 7+ 9.OOA. TrueB. FalseAPEX
General
4 months ago
A quantity, y, varies directly as x. When y = 9, x = 4. Find y when x = 10.22.53.64.415
General
4 months ago
Type in the number that should go in the blank. Use a slash (/) to show a fraction.Two-thirds of the people in the group came in blue cars, and one-eighth of them came in red cars. There were 48 people in the group, so Answer people came in red or blue cars.
General
4 months ago
Find the set below using A=(5,6,9), and so on (Explanation is in picture)
General
4 months ago
Suppose the force acting on a column that helps to support a building is a normally distributed random variable X with mean value 15.0 (kips) and standard deviation 1.25 (kips). Calculate the following probabilities: (1) (2 points) P(X ≥ 17.5). (2) (2 points) P(14 ≤ X ≤ 18).
General
4 months ago
A description of what Derek did wrong and what he should have done instead the correct solution graphed on a number line
General
4 months ago
Olivia and her three siblings bring a sack lunch to school each day, consisting of a bagel, an apple, a cookie, and a juice box. When Olivia's mom goes grocery shopping, she likes to purchase the same amount of each lunch item so that she can make complete lunches, with no leftover items. However, each item comes in a different sized package, as shown below: Bagels: six in a bag Apples: eight in a bag Cookies: twelve in a box Juice Boxes: nine in a box Find the least number of packages she must purchase in order to have the same amount of each item. With the amount of items Olivia's mom is purchasing, she'll be able to make enough lunches to feed all four siblings for days.
General
4 months ago
Find the Vertex of the function glven below?y = x^2-4x+1
General
4 months ago
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