Educators claim that 75% of all high school students will attend college next fall. at beechnut high school, with an enrollment of 818 seniors, a study found 645 will attend college in the fall. at = 0.05, test the claim that at least 75% of all high school students will attend college in the fall. use the p-value method.

The claim is valid

Step-by-step explanation:

Given that educators claim that 75% of all high school students will attend college next fall.

(Right tailed test at 5% significance level)

Sample size n = 818

Sample favourable x = 645

p = sample proportion =

Assuming H0 to be true std error of p =

Test statistic Z = p difference/std error

= 2.55

Z critical for 95%one tailed  is 1.645

Since test statistic >1.645 we reject H0

The claim is valid.

step-by-step explanation:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

pls mark as brainliest