10/23/22

Distribution of sample means
For a normal population with a mean of 100 and a standard deviation of 20, for a sample of n=25, what is the probability that the sample mean will be within 5 points of the population mean?
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10/22/22

Econometrics Question
Determine the sign of the expected bias introduced by omitting a relevant variable. State your assumptions and provide a very brief rationale for your assumptions.We plan to estimate the following... more
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10/16/22

Prob and Stat Homework Help
Suppose certain coins have weights that are normally distributed with a mean of 5.493 g and a standard deviation of 0.051 g. A vending machine is configured to accept those coins with weights... more
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09/26/22

Microeconomic - price elasticity of demand
Using a diagram, describe how a decrease in price affects volume expenditure when the price elasticity of demand isi. elasticii. not elastic
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09/09/22

Discrete probability

7% of all Americans live in poverty. If 39 Americans are randomly selected, find the probability thata.  Exactly 4 of them live in poverty. b.  At most 1 of them live in poverty. c.  At least 4 of... more
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09/07/22

The following table presents the values of X and Y sets of observations:
X 12 15 16 17 14Y 110 124 134 139 124Use the information provided to compute Karl Pearson Correlation Coefficient and interpret the result.Compute the value of coefficient of determination and... more
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09/07/22

A survey of 500 randomly selected customers based on their expenditure patterns was carried out and the data were found to be normally distributed

with a mean of N50 and a standard deviation of N15. Use the information to answer the following questions The probability that any customers are selected at random:a)         spends more than N80... more
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09/06/22

how do I solve this?
Suppose we roll two dice, a red and a green one, and let X be the value on the red die and Y the value on the green die. Let Z=X/Y. Find E[(X+2Y)^2 |X,Z].
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01/24/21

The graph of y=h(x) is shown. Draw the graph of y= 2h(x)-3
The original coordinates are (0,0) (2,4) (4,0)
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01/22/21

STATISTIC AND PROBABILITY
A random sample of 60 students in the business statistics course answered a survey on the average number of hours they spent on statistics each week. Unfortunately, the original data were lost,... more
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01/21/21

lim x→2 [f(x) + g(x)] (b) lim x→0 [f(x) − g(x)] (c) lim x→−1 [f(x)g(x)] (d) lim x→3 f(x) g(x) (e) lim x→2 [x2f(x)] (f) f(−1) + lim x→−1 g(x)
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01/20/21

calculus question
The table below gives selected values for the function f(x). With 5 rectangles, using the right side of each rectangle to evaluate the height of each rectangle, estimate the value of . (5... more
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01/20/21

Finding the Mean
For the following three questions, a team of psychologists studying narcolepsy (a sleep disorder characterized by sudden nodding off during the day) decided to follow 20 narcoleptic volunteers... more
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01/15/21

Draw the following region in the plane: {(x, y) : √y ≤ x ≤ 2, 0 ≤ y ≤ 4}
this is a multivariable calculus question
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