Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. this method is designed to increase the likelihood that each baby will be a girl, but assume that the method has no effect, so the probability of a girl is 0.5. assume that the groups consist of 43 couples. complete parts (a) through (c) below.

a. find the mean and the standard deviation for the numbers of girls in groups of 43 births.

the value of the mean is__ (type an integer or a decimal. do not round.)

the value of the standard deviation is (round to one decimal place as needed.)

b. use the range rule of thumb to find the values separating results that are significantly low or significantly high.

values of girls or fewer are significantly low. (round to one decimal place as needed.)

values of girls or greater are significantly high. (round to one decimal place as needed.)

c. is the result of 32 girls a result that is significantly high? what does it suggest about the effectiveness of the method?

the result is/is not significantly high, because 32 girls is greater than/equal to/less than girls. a result of 32 girls would suggest that the method is not effective/is effective.(round to one decimal place as needed.)

468

step-by-step explanation:

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17

region b will make the inequalities y < 2x + 1 and y > -x - 2 true ⇒ answer a

step-by-step explanation:

* lets study the graph and the inequality to solve the question

- the inequality y > -x - 2

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = -2 that means the line intersect the y-axis at point (0 , -2)

∵ the sign of the inequality is >

∴ we shad the part over the line

  region a and b

- the inequality y < 2x + 1

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = 1 that means the line intersect the y-axis at point (0 , 1)

∵ the sign of the inequality is <

∴ we shad the part under the line

  region b and c

∵ the common region between the two lines is region b

∴ region b will make the inequalities y < 2x + 1 and y > -x - 2 true

a, b, c, d are correct.

step-by-step explanation:

we have g(x) = 3 and are required to find which option is a translation of g(x).

now, 'translation' is a transformation which means to shift the function in any direction and the general form of translation is g(x) + k, where k is any real number.

so, according to the options we see that all are correct as they satisfy the general form of translation.

also, it can be seen from the graph below that the function g(x) = 3 is shifted from its position in all the four options.