Of a random sample of 381 high-quality investment equity options, 191 had less than 30% debt. of an independent sample of 166 high-risk investment equity options, 145 had less than 30% debt. test, against a two sided alternative, the null hypothesis that the two population proportions are equal.

As we have calculated Z = -8.2345 THEREFORE critical value is -1.96 hence there is significant difference ,  neglect null hypothesis.

and two population are not equal

Step-by-step explanation:

Given data:

Assuming null hypothesis be Hypothesis O (P1 = P2)

Assuming alternate hypothesis be Hypothesis A (P1 is not equal to P2)

Q = 1 - P = 0.3857

SE = 0.0452

test statics

   [taken 5% significance level]

from standard z table , critical value of

As we have calculated Z = -8.2345 THERFORE critical value is -1.96 hence there is significant difference ,  neglect null hypothesis.

and two population are not equal

answer: given that the roller coaster can accommodate 1600 riders per hour, thus the roller coaster can accomodate 1600 / 60 = 26.67 riders per minute.

given that there are 345 people in the line, the number of minutes it will take for the 345 persons to get into the roller coaster is given by 345 / 26.67 = 12.94 minutes.

therefore, it will take you 12.94 minutes to get to the front of the line.

step-by-step explanation:

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify