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MATH SOLVE
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General
Find the probability of getting exactly 6 girls in 8 births.
General
6 months ago
Find two numbers whose sum is 23 and whose product is a maximum.
General
6 months ago
Consider a paint-drying situation in which drying time for a test specimen is normally distributed with σ = 7. the hypotheses h0: μ = 75 and ha: μ < 75 are to be tested using a random sample of n = 25 observations. (a) how many standard deviations (of x) below the null value is x = 72.3? (round your answer to two decimal places.) standard deviations (b) if x = 72.3, what is the conclusion using α = 0.01? (round your answers to two decimal places.) test statistic z = critical value z = what can you conclude? reject the null hypothesis. there is sufficient evidence to conclude that the mean drying time is less than 75. do not reject the null hypothesis. there is sufficient evidence to conclude that the mean drying time is less than 75. do not reject the null hypothesis. there is not sufficient evidence to conclude that the mean drying time is less than 75. reject the null hypothesis. there is not sufficient evidence to conclude that the mean drying time is less than 75. (c) what is α for the test procedure that rejects h0 when z ≤ −2.8? (round your answer to four decimal places.) α = (d) for the test procedure of part (c), what is β(70)? (round your answer to four decimal places.) β(70) = (e) if the test procedure of part (c) is used, what n is necessary to ensure that β(70) = 0.01? (round your answer up to the next whole number.) n = specimens (f) if a level 0.01 test is used with n = 100, what is the probability of a type i error when μ = 76? (round your answer to four decimal places.)
General
6 months ago
Find the hypotenuse of the right triangle if the perpendicular leg is 12 and base is 5
General
6 months ago
Which ordered pair is the solution to the system of equations? {y=x-4 {-4x+3y=-3A.(0, −1)B.(−9, −13)C.(−6, −10)D.(−6, 2)
General
6 months ago
A hiker is walking down a mountain. She walked 5,978 feet in 17 minutes. In that time, she descended 1,024 feet from the top of the mountain. She then walked 3,972 feet in 7 minutes. In that time, she descended 500 more feet. Express the average rate of change in altitude of the hiker from her starting point to her ending point as a unit rate.
General
6 months ago
in this right triangle LMN L and M are complentary angles and sin (L) is 19\20 what is cos (M)
General
6 months ago
Find constants a and b in the function f(x)=axe^bx such that f(1/5)=1 and the function has a local maximum at x=1/5.
General
6 months ago
Give the slope of y - 3 = 4 ( x + 8 ) and a point on the line.
General
6 months ago
Help it’s math college readiness
General
6 months ago
Question 2(Multiple Choice Worth 15 points) (04.03 LC) Which of the following options results in a graph that shows exponential growth? f(x) = 0.4(0.2)x f(x) = 4(0.98)x f(x) = 0.7(5)x f(x) = 5(4)−x
General
6 months ago
If Sam has 6 different hats and 3 different scarves, how many different combinations could he wear
General
6 months ago
A random sample is drawn from a population with mean μ = 66 and standard deviation σ = 5.5. use table 1.a. is the sampling distribution of the sample mean with n = 16 and n = 36 normally distributed? yes, both the sample means will have a normal distribution. no, both the sample means will not have a normal distribution. no, only the sample mean with n = 16 will have a normal distribution. no, only the sample mean with n = 36 will have a normal distribution.b. can you use the standard normal distribution to calculate the probability that the sample mean falls between 66 and 68 for both sample sizes? yes, for both the sample sizes, standard normal distribution could be used. no, for both the sample sizes, standard normal distribution could not be used. no, only for the sample size with n = 16, standard normal distribution could be used. no, only for the sample size with n = 36, standard normal distribution could be used.c. calculate the probability that the sample mean falls between 66 and 68 for n = 36. (round intermediate calculations to 4 decimal places, "z" value to 2 decimal places, and final answer to 4 decimal places.)
General
6 months ago
Find the sum and product of the roots. 3x 2 - 4x - 7 = 0
General
6 months ago
Determine the n-intercept of the graph of the graph of the car value equation v= -1385n + 18,790
General
6 months ago
Which of the following illustrates the truth value of the given conditional statement? If ice is hot, then rain is wet.F T → TT T → TT F → FF F → T
General
6 months ago
Find the quotient. Show all work for full credit. 4+2i/6-i
General
6 months ago
Find the average rate of change for the given function from x = −1 to x = 2.Graph of f of x equals negative three x plus 2
General
6 months ago
Suppose a triangle has sides a, b, and c, and let theta be the angle opposite the side of length a. If cos theta > 0 what must be true?A. a2 + b2 > c2B. a2 + b2 = c2C. b2 + c2 < a2D. b2 + c2 > a2
General
6 months ago
Two plans for reaching a goal are given below.Plan A: Save $450 over the next 8 weeks by working 9 hours per week at $7.20 per hour.Plan B: Save $450 over the next 6 weeks by working 15 hours per week at $6.50 per hour.Which of the following is a true statement?a.Only plan A will work for achieving the goal.b.Only plan B will work for achieving the goal.c.Both plans will work for achieving the goal.d.Neither plan will work for achieving the goal.
General
6 months ago
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