05/27/20

Using empirical rule and sample numbers find
A car dealer notices that 10% of the cars he sells are metallic grey. Twenty of his customers are selected at random. In a sample of 100 customer records find;a) the number of expected metallic... more
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05/27/20

A random sample of 189 full-grown lobsters had a mean weight of 17 ounces and a standard deviation of 3.9 ounces. Construct a 95% confidence interval for the population mean.
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05/27/20

With the help of t test find if significant difference exist between the scores obtained on emotional intelligence by male and female teachers
Male teachers - 45, 32, 25, 57, 36, 42, 35, 55, 66, 65, 30, 35, 22, 27, 26Female teachers - 36, 53, 64, 55, 52, 34, 62, 73, 61, 34, 45, 38, 36, 25, 45
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05/26/20

Find the probability that 5 of the dogs have health insurance and that more than 10 dogs have health insurance.
3% of all dogs have health insurance. In a random sample of 100 dogs in a large city. find...
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R

10/03/19

How to avoid warning when introducing NAs by coercion?
I generally prefer to code R so that I don't get warnings, but I don't know how to avoid getting a warning when using `as.numeric` to convert a character vector.For example: x <-... more
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03/21/19

Combinatorics Question
How many 6-character passwords can be created using the letters and numbers A, B, C, 1, 2, and 3 (each once) where the first character is a letter and the last character is a number?
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