A student surveys 30 randomly selected​ full-time students to determine the relation between the number of hours​ full-time students spend on social media each​ week, x​, and​ grade-point average, y. She found that the​ least-square ​y = -0.4943x+3.24. Interpret the slope.

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step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

1 + (6 / x - 1)

step-by-step explanation:

divide using polynomial division.

after 1 year: 221 deer

step-by-step explanation:

30% of 170 is 51. 170+51=221