What is f. 8=8f because i dont understand it

The statewide pass rates for ENGL&101 across Washington state community colleges is 68%. An instructor in the English depart

Mila [183]

Answer:

The calculated value Z=1.2413 < 1.96 at 0.05 level of significance

Null hypothesis is accepted

An instructor in the English department at CBC believes rates at CBC may be equal to the state average

Step-by-step explanation:

Step(i):-

Given Population proportion

P=68%= 0.68

Sample proportion

$p^{-} =\frac{x}{n} = \frac{179}{250} = 0.716$

Null hypothesis : H₀ : p = 0.68

Alternative Hypothesis :H₁ : p > 0.68

Step(ii):-

Test statistic

$Z = \frac{p^{-}-P }{\sqrt{\frac{P Q}{n} } }$

$Z = \frac{0.716-0.68 }{\sqrt{\frac{0.68 X 0.32}{250} } }$

Z = 1.2413

Level of significance

$Z_{0.05} = 1.96$

The calculated value Z=1.2413 < 1.96 at 0.05 level of significance

Null hypothesis is accepted

An instructor in the English department at CBC believes rates at CBC may be equal to the state average

6 0

4 years ago

The speed limit on a road drops down to 15 miles per hour around a curve. Mr. Gerard slows down by 10 miles per hour as he drive

vladimir1956 [14]

Answer:

x ≤ 25mph

Step-by-step explanation:

Given that :

Speed limit drops to 15 miles per hour at curve

Driver slows down by 10 miles per hour as he drives around the curve

The driver's speed before reaching the curve is :

Let speed befure curve = x

Lowest speed before curve = 15 +. 10 = 25 mph

x ≤ 25mph

7 0

3 years ago

Options for #1

Mekhanik [1.2K]

1. 56.4

2.107.15

So for the first one I subtracted like this:53.41- -2.99=56.4

You may be wandering why i subtracted that way,I did that because you are meant to subtract and the second number already has a negative sign which is MINUS.

And for the second I subtracted the smaller number from the bigger number this way:144.96 ‐ 37.8

Hope this helps...

7 0

3 years ago

Read 2 more answers

How to find the midpoint of h(13,8) and x (-6,-6)

JulsSmile [24]

First you need the midpoint formula. (x1+x2 divided by 2)and (y1+y2 divided by 2) Which would look like this.. 13+-6=7 and 7 divided by 2 is 3.5.... 8+-6=2 And 2 divided by 2 is 1. so your answer is (3.5, 1)

3 0

3 years ago

What is the polygon being rotated to create the blue quilt block patterns??????

never [62]

Answer:

D. Triangle is correct

Step-by-step explanation:

We are given that,

A polygon is rotated to form the blue block patterns,

As, from the figure, we see that,

The polygon being rotated has three sides.

So, the polygon is a triangle.

Thus, a triangle is rotated to form the blue block pattern.

Hence, option D is correct.

7 0

3 years ago

Read 2 more answers