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MATH SOLVE
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Which of the following is NOT a property of the Normal distribution? a. the area under the Normal density curve must add up to 1 b. the mean is equal to the median, and both lie directly in the middle of the curve c. approximately 5% of the data lies OUTSIDE 2 standard deviations from the mean d. approximately 68% of the data lies WITHIN 2 standard deviations from the mean e. all are correct
General
2 months ago
Lucy cycles 8.4km in 18 minutes. Work out her average speed in km/h and explain.
General
2 months ago
True or false? A histogram and a relative frequency histogram, constructed from the same data, always have the same basic shape. Choose the correct answer below. O A. False. The two histograms can have very different shapes depending on the distribution of the data. O C. False. The histograms use different scales on the y-axis, resulting in completely different shapes. O B. True. They will both have the same shape and the same vertical scale. They will dffer only in the scale used on the horizontal axis. O D. True. A relative frequency histogram will have a different scale on the y-axis but the same shape as a regular histogram.
General
2 months ago
plz help me#1 Louisa spent a total of $30.75 on the entry fee plus 15 ride tickets. Click “show your work” below and show calculations to determine how much Louisa paid for the entry fee.#2 Peter has $22 he can spend at Lakeside on the entry fee and tickets. Click “show your work” below and show calculations to determine how many tickets can Peter buy.Let t represent the number of ride tickets purchased and c represent the total cost of the entry fee and ride tickets. Write an equation to calculate the total cost for a person pays the entry fee and purchases t tickets.
General
2 months ago
Assumptions underlying the independent-measures ANOVA Which of the following are assumptions underlying independent-measures analysis of variance? Check all that apply. The samples are drawn from populations of unequal variance. The observations are independent of one another. The populations from which the samples are taken follow a t-distribution. Each of the populations of scores from which the samples are drawn has the same variance.
General
2 months ago
A business major wants to determine whether the variation in advertising costs of hair salons is different from the variation in advertising costs of nail salons. He surveys several businesses and finds the standard deviation in monthly advertising costs is $23 for 12 hair salons, and $43 for 8 nail salons. What is the test value for this hypothesis test? Test value:
General
2 months ago
multiply (−3.2)⋅1.7 A−5.44 B−1.5 C1.5 D 5.44PLS HELPPPPPP
General
2 months ago
Two sociologists have grant money to study school busing in a particular city. They wish to conduct an opinion survey using 687 telephone contacts and 484 house contacts. Survey company A has personnel to do 31 telephone and 11 house contacts per hour; survey company B can handle 22 telephone and 16 house contacts per hour. How many hours should be scheduled for each firm to produce exactly the number of contacts needed?
General
2 months ago
Two boxes (24 kg and 62 kg) are being pushed across a horizontal frictionless surface, as the drawing shows. The 46-N pushing force Modifying Above P With right-arrow is horizontal and is applied to the 24-kg box, which in turn pushes against the 62-kg box. Find the magnitude of the force Modifying Above F With right-arrow that the 24-kg box applies to the 62-kg box.
General
2 months ago
PLEASE HELP!! Which steps can be used to solve 6/7x+1/2=7/8 for x? Check all that apply. A. Divide both sides of the equation by 7/8 B. subtract 1/2 from both sides of the equation C. use the LCD of 2 to combine like terms D. divide both sides by 6/7 E. multiply both sides by 7/6
General
2 months ago
the company manufactured 3,400 helmets, using 2,278 kilograms of plastic. The plastic cost the company $17,313. According to the standard cost card, each helmet should require 0.62 kilograms of plastic, at a cost of $8.00 per kilogram. Required: 1. What is the standard quantity of kilograms of plastic (SQ) that is allowed to make 3,400 helmets? 2. What is the standard materials cost allowed (SQ × SP) to make 3,400 helmets?
General
2 months ago
A Martian couple has children until they have 2 males (sexes of children are independent). Compute the expected number of children the couple will have if, on Mars, males are: (a) Half as likely as females. (b) Just as likely as females. (c) Twice as likely as females.
General
2 months ago
A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 50.0 and 60.0 minutes. Find the probability that a given class period runs between 50.25 and 51.5 minutes.
General
2 months ago
4) We want a 99% confidence interval for the average amount of time (in minutes) spent commuting to work in a large city. The interval is to have a margin of error of no more than 3 minutes, and the amount of time spent commuting has a normal distribution with a standard deviation = 18 minutes. What numbers of observations are required?
General
2 months ago
Identify the zeros of the function f(x) = 2x^2 − 4x + 5 using the Quadratic Formula
General
2 months ago
22. Franny plans to spend 4 hours reading. Abouthow many pages would she need to read eachhour to finish the book?Franny's To-Do List• Put 64 pictures in aphoto album.• Finish reading 113 pages.of a book• Buy presents for Kate,Wendy, and Tia.• Put shoes on rack
General
2 months ago
On Monday, during a one day sale, the price of a suit was decreased by 20%. On Tuesday, the price of the suit was changed back to the original amount. By what percent did the price of the suit change on Tuesday?
General
2 months ago
The spinner is divided into 10 equal sections. Which event has theoretical probability of exactly 1/5? Select three options. spinning a number less than 3 spinning a 4 or 5 spinning an odd number spinning a number greater than 8 spinning a number less than 8
General
2 months ago
Alaina evaluated 1718+1201718+120 and got an answer of 18381838. Which statement is true about her answer?
General
2 months ago
A newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper took a SRS of n=1400 registered voters and found that 720 would vote for the Republican candidate. Let p represent the proportion of registered voters in the state who would vote for the Republican candidate.We testH0:p=.50Ha:p>.50(a) What is the z -statistic for this test?(b) What is the P-value of the test?
General
2 months ago
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