The number 75 is increased to 79. What is the percentage by which the number was increased

Mathematics

1 answer:

pickupchik [31]3 years ago

6 0

Answer:

105.3%

Step-by-step explanation:

i use the is over of method so:

$\frac{79}{75} = \frac{x}{100}$ , multiply 79 x 100, then divide by 75.

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Thirty-two percent of workers in Troberca City are college graduates. You randomly select 50 workers and ask them is he or she i

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<h3>What is the z- score table?</h3>

A standard normal table (also called the unit normal table or z-score table) is a mathematical table for the values of ϕ, indicating the values of the cumulative distribution function of the normal distribution. Z-Score, also known as the standard score, indicates how many standard deviations an entity is, from the mean.

Given here, P(probability that a worker is a college graduate) = 32%

= 0.32

q (probability that a worker is not a college graduate) is 1-0.32 = 0.68

now μ(mean) = n×p

= 50×0.32

= 16

Again standard deviation σ = $\sqrt{npq\\}$