Acertain disease has an incidence rate of 0.4%. if the false negative rate is 7% and the false positive rate is 5%, compute the probability that a person who tests positive actually has the disease.

The incidence rate is = 0.4%  or 0.004

The false negative rate is = 7%  or 0.007

The false positive rate is = 5%  or 0.005

The probability is

0.05*(1-0.004) + 0.95*0.004

= 0.0498 + 0.0038 = 0.0536

Probability that a person who tests positive actually has the disease would be represented as:

Let the probability be represented by = p

p * 0.0536 = 0.95 * 0.004

p = 0.0038/0.0536

p = 0.0708

Hence, probability is 0.0708

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.