An investment website can tell what devices are used to access their site. The site managers wonder whether they should enhance the facilities for trading via smartphones so they want to estimate the proportion of users who access the site that way. They draw a random sample of

131

investors from their customers. Suppose that the true proportion of smartphone users is

26

%.

Complete parts a) through c) below.

a) What would the managers expect the shape of the sampling distribution for the sample proportion to be?

Skewed to the left

Unimodal and symmetric

Skewed to the right

Nonsymmetric

b) What would be the mean of this sampling distribution?

(Round to two decimal places as needed.)

c) What would be the standard deviation of the samplingdistribution?

(Round to three decimal places as needed.)

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation:

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

answ5

step-by-step explanation:

u have to pay atttion to me

the area of the rectangle is 35units^2.

step-by-step explanation:

graph it and find the distance.

it is a 5*7 rectangle.

therefore the area is 35units^2.