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MATH SOLVE
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37 is what percent of 148?
General
2 months ago
To test H 0: p=0.40 that a population proportion equals 0.40, the test statistic is a z-score that measures the number of standard errors between the sample proportion and the H0 value of 0.40. If z=3.8, do the data support the null hypothesis, or do they give strong evidence against it? (A) The data give strong evidence against the null hypothesis because the sample proportion falls over three standard errors from the null hypothesis value. (B) The data support the null hypothesis because the sample proportion falls over three standard errors from the null hypothesis value. (C) The data give strong evidence against the null hypothesis because the sample proportion falls within four standard errors from the null hypothesis value. (D) The data support the null hypothesis because the sample proportion falls within four standard errors from the null hypothesis value.
General
2 months ago
Consider the following sample of observations oncoating thickness for low-viscosity paint ("Achieving a Target Value for a Manufacturing Process:A Case Study,"J. Qual. Technol.,1992: 22–26):.83 .88 .88 1.04 1.09 1.12 1.29 1.311.48 1.49 1.59 1.62 1.65 1.71 1.76 1.83. Assume that the distribution of coating thicknessis normal (a normal probability plot strongly sup-ports this assumption).a. Calculate a point estimate of the mean value of coating thickness, and state which estimator you used.b. Calculate a point estimate of the median of the coating thickness distribution, and state which estimator you used.c. Calculate a point estimate of the value that separates the largest 10% of all values in the thickness distribution from the remaining 90%, and state which estimator you used. [Hint: Express what you are trying to estimate in terms of m and s]d. Estimate P(X < 1.5), i.e., the proportion of all thickness values less than 1.5. [Hint: If you knew the values ofmands, you could calculate this probability. These values are not available, but they can be estimated.]e. What is the estimated standard error of the estimator that you used in part (b)?
General
2 months ago
Which relationship would most likely have a positive correlation?a. The amount of memory in a computer, and the number of keys on the keyboard.b. The rate at which a train travels, and the time it takes for it to reach its destination.C. The number of tickets sold for a baseball game, and the number of hotdogs sold atthe game.
General
2 months ago
An automobile mileage and gasoline-consumption testing, 13 automobiles were road tested for 300 miles in both city and highway driving conditions. The following data were recorded for miles-per-gallon performance. City: 20.3 20.8 20 18.5 17.3 19.4 20.9 20.1 20.2 19.4 19.3 19.4 20.3 Highway: 23.8 25 22.7 23 23.6 21.8 21.6 23 23.4 25.5 23.8 22.9 23.1 Calculate the mean, median, and mode for City and Highway gasoline consumption (to 1 decimal).
General
2 months ago
A 5.8-ft fence is 15.431 ft away from a plant in the direction of the sun. It is observed that the shadow of the fence extends exactly to the bottom of the plant. (See drawing) Find θ, the angle of elevation of the sun at that time. Round the measure of the angle to the nearest tenth of a degree when necessary.
General
2 months ago
Write the summation to estimate the area under the curve y=2+√x from x=2 to x=5 using 3 rectangles and right endpoints.
General
2 months ago
You are a contractor who is installing a new wooden fence for a customer. The dimensions of the fence are 20 feet long and 6 feet high. If each piece of wood is 72 inches tall and 4 inches wide and the wood costs $1.10 per square foot, how much will the wood for the new fence cost?
General
2 months ago
During a sale at the local department store, you buy three sweatshirts and two pairs of sweatpants for 85.50. Later you return to the same store and buy three more sweatshirts and four more pairs of sweatpants for $123. What is the sale price of each sweatshirt and each pair of sweatpants?
General
2 months ago
Josh Has a job that pays him an annual salary of 76,000. If he is paid on a biweekly basis how much does he earn pre period Sarah has one job that pays her a weekly wage of $9.34 per hour if she works 20 hours per week what is her gross pay
General
2 months ago
The distributive property to express 48+72
General
2 months ago
2H2O → 2H2 + O2 Describe the mass of the reactants and products given the balanced chemical reaction.A) The mass of the products is 23 that of the reactants. B) The mass of the reactants equals the mass of the products. C) The mass of the reactants is less than the mass of the products. D) The mass of the reactants is greater than the mass of the products.
General
2 months ago
Lisa and Bart spin this spinner 60 times the result are below/ black=17 blue=15 orange=21 purple=7 a. What is the experimental probability of a spin of orange? B which color had an experimental probability that matched its theoretical probability
General
2 months ago
Cindy has 26 nickels. She is getting rolls of nickels from the bank. She has enough money to get up to 10 rolls of nickels and each roll contains 40 nickels. The bank will not give partial rolls. The function that models the number of nickels Cindy will have after leaving the bank is f(r)=40r+26, where r is the number of rolls of nickels she gets. What is the practical domain of the function? A) all real numbers B) r>1 C) {66, 106, 146, 186, 226, 266, 306, 346, 386, 426} D) all integers from 1 to 10, inclusive
General
2 months ago
Faye’s bank charges her a $2.25 service fee every time she uses an out-of-network ATM. If Faye uses an out-of-network ATM twice a week, how much money does she pay in service fees every year?a.$240.25b.$225.00c.$200.75d.$234.00
General
2 months ago
Having a savings account can contribute to a person’s overall financial well-being. Which one of the following is NOT a benefit of maintaining a savings account?a.A savings account provides security in tough financial timesb.With a savings account, you can invest when the opportunity presents itselfc.Having a savings account gives individuals the ability to borrow money from members in the communityd.A savings account allows an individual to fulfill life long dreams
General
2 months ago
A coat was sold by a shopkeeper at a gain of 5%. If it had been sold for 1650 less, he would have had a 5% loss. Find CP
General
2 months ago
An airplane traveled 1,991.25 kilometers at an average speed of 885 kilometers per hour. How long did it take for the airplane to travel this distance? hours and minutes
General
2 months ago
In which function is x = 2 mapped to 32?A. f(x) = -3x^2-4B. g(x) = 4(x+3)^2-68C. h(x) = 3xD. j(x) = 2x-62
General
2 months ago
t takes Audrey 35 hour to paint 25 square yards of wood to be used for making shelves. How many square yards can she paint in 1 hour?
General
2 months ago
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