When trying to hire managers and executives, companies sometimes verify the academic credentials described by the applicants. one company that performs these checks summarized their findings for a six-month period. of the 91 applicants whose credentials were checked, 16 lied about having a degree.

(a) find the proportion of applicants who lied about having a degree, and find the standard error.

(b) consider these data to be a random sample of credentials from a large collection of similar applicants. give a 90%confidence interval for the true proportion of applicants who lie about having a degree.

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step-by-step explanation:

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x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

h is the x-coordinate of the vertex

step-by-step explanation:

we have

in this function

the point represent the vertex of the function

so

h is the x-coordinate of the vertex

k is the y-coordinate of the vertex