1- a local university administers a comprehensive examination to the candidates for b. s. degrees in business administration. five examinations are selected at random and scored. the scores are shown below. grades 80 90 91 62 77 a. compute the mean and the standard deviation of the sample. b. compute the margin of error at 95% confidence. c. develop a 95% confidence interval estimate for the mean of the population. assume the population is normally distributed.

x=9

step-by-step explanation:

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answer: d.) the total number of protons and neutrons is 15

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~

your friendly neighborhood human spider! .

im not sure what this means: mc011-7.jpg

step-by-step explanation:

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this