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Questions
Q1. In the last two weeks of a sale, prices are reduced first by 30% and then by a further 40% of the new price. What is the final sale price of a shirt which originally costs $15?
Q2. Use matrices to solve the following system of equations: 2x + y = 5 3x - 2y = 4
Q3. Two boys have $176 between them. If the first gave the second $7, they would each have the same amount of money. How much money did each boy have?
Q4. Two numbers differ by 3. The sum of their reciprocals is - . Find the numbers. 10
Q5. The number of attendees at recent children's soccer games is given by 7. 9, 18, 22, 27, 29, 32, 40 Find the standard deviation.
Q6. When $143 is divided in the ratio 2 : 4 : 5, what is the difference between the largest share and the smallest share?
Explain whether there is likely to be variability in the following measurements if they were to be taken on 10 consecutive days for the same student.
Compare the result in part c with the decision using the expected value approach.
An experiment was conducted to test memory performance in two experimental conditions. Task performance of participants tested
The sample mean to be calculated from a random sample of size n = 4 from a population consists of the eight measurements (2, 6, 9, 12, 25, 29, 39, 50). Find the sampling distribution of y-. (Hint: There are 70 samples of size 4 when sampling f..
Consider all random samples of 36 test scores. What is the standard deviation of the sample means? (Round your answer to three decimal places)
What is the probability that there will be a major earthquake within the next 30 years in all four fault regions? Write a Solution Trail for this problem.
c. Using a = .05, can you conclude that the population proportion is not equal to .20? - Select your answer -YesNo
In determining the amount of oil the company must report as its lower limit of daily production, the company wants to choose an amount such that for 80% of the days, at least the reported amount x is produced. Determine the value of the lower limit..
For the upcoming year, O'yeah has negotiated with a supplier to have SKU# 001237 produced and delivered to O'yeah at $175 per unit.
Find, for k = 0, 1, 2, the number of persons in the group who had done of these two things: (i) exactly k, (ii) at least k, (iii) at most k.
To test this, the R / D division did testing by selecting a random sample of 7 cars with the following results:
According to the article "Effect of Preparation Methods on Total Fat Content, Moisture Content, and Sensory Characteristics of Breaded Chicken Nuggets and Beef
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