22. abnormalities in the 1980s, it was generally believed that congenital abnormalities affected about 5% of the nation’s children. some people believe that the increase in the number of chemicals in the environment has led to an increase in the incidence of abnormalities. a recent study examined 384 children and found that 46 of them showed signs of an abnormality. is this strong evidence that the risk has increased? a) write appropriate hypotheses. b) check the necessary assumptions and conditions. c) perform the mechanics of the test. what is the p-value? d) explain carefully what the p-value means in context. e) what’s your conclusion? f) do environmental chemicals cause congenital abnormalities? 23. absentees the national center

Step-by-step explanation:

Set up null and alternate hypothesis

H0: p =0.05

Ha: p>0.05

(One tailed test at 5% level)

Sample size n =384

Sample proportion p = 46/384 =0.1198

p difference = 0.1198-0.05 =0.0698

Std error =

Test statistic = 4.23

p value = 0.000012

Since p<0.05, we reject null hypothesis

There is more than 99.95% probability that proportion is more than 0.05

We accept the claim that the risk has increased.

answer: the area of the parallelogram below is 42 square meters.

- officialprodixy ☕

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!