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Sixty-four tickets are issued for a schooldance, and 96 brownies are ordered forthe refreshment table. Each student getsthe same number of tickets as everyother student. Each student also gets thesame number of brownies as every otherstudent.Each student will get — tickets and _brownies.
General
6 months ago
A tire company measures the tread on newly-produced tires and finds that they are normally distributed with a mean depth of 0.98mm and a standard deviation of 0.35mm. Find the probability that a randomly selected tire will have a depth less than 0.70mm. Would this outcome warrant a refund (meaning that it would be unusual)?
General
6 months ago
A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95 % confidence interval for the true proportion of all voters in the state who favor approval. A) 0.435 < p < 0.508 B) 0.444 < p < 0.500 C) 0.471 < p < 0.472 D) 0.438 < p < 0.505
General
6 months ago
Which graph shows the solution to the system of linear inequalities?y < 2x – 5y > –3x + 1On a coordinate plane, 2 straight lines are shown. The first solid line has a negative slope and goes through (0, 1) and (1, negative 2). Everything to the right of the line is shaded. The second dashed line has a positive slope and goes through (0, negative 5) and (2, negative 1). Everything to the right of the line is shaded.On a coordinate plane, 2 straight lines are shown. The first dashed line has a negative slope and goes through (0, 1) and (1, negative 2). Everything to the right of the line is shaded. The second solid line has a positive slope and goes through (0, negative 5) and (2, negative 1). Everything to the right of the line is shaded.On a coordinate plane, 2 straight lines are shown. The first solid line has a negative slope and goes through (0, 1) and (1, negative 2). Everything to the left of the line is shaded. The second dashed line has a positive slope and goes through (0, negative 5) and (2, negative 1). Everything to the left of the line is shaded.On a coordinate plane, 2 straight lines are shown. The first dashed line has a negative slope and goes through (0, 1) and (1, negative 2). Everything to the left of the line is shaded. The second solid line has a positive slope and goes through (0, negative 5) and (2, negative 1). Everything to the left of the line is shaded. HELP ME PLEASE HURRY
General
6 months ago
a. Suppose that a single card is selected from a standard 52-card deck. What is the probability that the card drawn is a spade?b. Now suppose that a single card is drawn from a standard 52-card deck, but it is told that the card is black.What is the probability that the card drawn is a spade?
General
6 months ago
A study was conducted to determine if the salaries of elementary school teachers from two neighboring districts were equal. A sample of 15 teachers from each district was randomly selected. Test the claim that the salaries from both districts are equal. Use significance 0.05 and assume that the data are distributed normally. n x¯ s District 1: 15 $28,900 $2,300 District 2: 15 $30,300 $2,100 3A. What is the appropriate set of hypotheses (H0, H1)? • µ1 – µ2 = 0, µ1 – µ2 ≠ 0 • µ1 – µ2 ≠ 0, µ1 – µ2 = 0 • µ1 – µ2 = 0, µ1 – µ2 < 0 • µ1 – µ2 = 0, µ1 – µ2 > 0 3B. What is the correct confidence interval? • (–2475, –325) • (–2100, –700) • (–2975, 175) • (–3125, 325) 3C. Are the salaries of the teachers from the two districts different? • Yes. • No. • Sometimes. • Depends on distribution.
General
6 months ago
Black perch are ocean fish found on reefs near shore. A graduate student at CSULB is interested in testing whether black perch from two different populations behave differently, on average. In her experiment, she measured routine swimming velocity (to the nearest 0.001 cm/s) for 18 fish from one population, and 21 fish from another. a) Which statistical test would you use to analyze these data?
General
6 months ago
One pump can empty a pool in 4 days, whereas a second pump can empty the pool in 10 days. How long will it take the two pumps, working together, to empty the pool? (Fractional answers are OK.)
General
6 months ago
harry, regan and kelan share £450 in the ratio 2 : 5 : 3 . how much money does kelan get?
General
6 months ago
What property justifies that 6x+9/3=2x+3? A. Commutative Property of Addition B. Commutative Property of Multiplication C. Distributive Property D. Addition of Like Terms
General
6 months ago
WILL MARK BRAINLIEST!! Seiji and Gavin both worked hard over the summer. Together they earned a total of $400. Gavin earned $25 more than Seiji. (a) Write a system of equations for the situation. (Use s for the amount Seiji earned and g for the amount Gavin earned.) (b) Graph the equations in the system. (c) Use your graph to estimate how much each person earned
General
6 months ago
Vector question. Let v=<-2,1> u=<3,-5> , find:1)v * u2)2)Find the angle formed between v and u
General
6 months ago
Suppose that u = < u1,u2 > and v = < v1,v2 > are vectors such that | u+v |^2 = | u |^2 + | v |^2. Prove that u and v are orthogonal.
General
6 months ago
If f(x) = 7x - 3 and g(x) = x2, what is (gºf)(1)?Enter the correct answer.
General
6 months ago
Solve the problem. Find the surface area of a right regular hexagonal pyramid with sides 2 cm and slant height 5 cm. Round youranswer to the nearest hundredth.
General
6 months ago
The point P(2k, k) is equidistant from A(-2, 4) and B (7,-5).Find the value of k.
General
6 months ago
Beth is going to the state fair. Each ride costs $7 to ride and each exhibit costs $3 to view. Let x represent the number of rides Beth rides and y represent the number of exhibits she views. Which expression describes the number of rides and exhibits Beth can ride and view if she has at most $98 to spend at the fair?
General
6 months ago
490for an angelnualanembership fee of $500 Mr Bailey can join a country club that would allow him to pay a round of golf for $35 without the membership the country club charges $55 for each round of golf how many rounds of golf with mr. Bailey have to pay play for the cost to be the same with and without a membership
General
6 months ago
The length of a side of a square is 4x-1 express the area of the square in terms of x
General
6 months ago
Use Identities to find the exact value.24) cos(-75°)
General
6 months ago
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