PLATO! Select ALL the correct answers. Select all the studies in which the results may have been skewed by bias. For each study, assume a normal distribution.
A. a study with a significantly smaller than expected standard deviation about the sample mean.
B. a study on cooking times at high altitudes, with 90% of the data falling above the population mean.
C. a study on the average length of hiking trails in all state parks, with 50% of the data falling below
the population mean.
D. a study of employee satisfaction, with 25% of the data having a z-score greater than 1.
E. a study of employees' annual number of vacation days, with a large standard deviation about the
mean.
F. a study on crosswalk wait times with 95% of the data falling within 1 standard deviation of the
population mean.

a

step-by-step explanation:

rurbrbrjrnrbjr

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

answer: list the statements and i will follow up!

step-by-step explanation:

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.