Answer:
Explanation:
Never gonna give you up
The persistence of a chemical refers to
Answer: Time it takes for chemicals to degrade in the environment
Explanation: I got it right so should u pookie
Chi-Square A random sample of fatal accidents in the US that involved drivers with a BAC (Blood Alcohol Content) of 0.08 or greater was taken. Data was recorded on gender and age group. Gender Female Men 16-20 55 150 21-30 140 275 Age Group 31-40 140 260 41-50 125 220 51-60 60 150 61 10 45 1 Is there convincing evidence that there is an association between gender and age groups for fatal accidents that involve driving while intoxicated?
We reject the null hypothesis and this shows that there is overwhelming evidence that there is a link between gender groups and dr--unk-driving accidents.
How to solveMen Female
16-20 150 55
21-30 275 140
31-40 260 140
41-50 220 125
51-60 150 60
61+ 45 10
First, we need to find the expected values for each cell. The expected value for a cell is calculated as (row total * column total) / grand total.
Row totals:
16-20: 205
21-30: 415
31-40: 400
41-50: 345
51-60: 210
61+: 55
Column totals:
Men: 1100
Female: 530
Grand total: 1630
Now we can calculate the expected values:
Men Female
16-20 (1100*205)/1630 (530*205)/1630
21-30 (1100*415)/1630 (530*415)/1630
31-40 (1100*400)/1630 (530*400)/1630
41-50 (1100*345)/1630 (530*345)/1630
51-60 (1100*210)/1630 (530*210)/1630
61+ (1100*55)/1630 (530*55)/1630
Now, calculate the Chi-Square statistic: Χ² = Σ((observed - expected)² / expected)
Χ² ≈ 19.47
df= 5
p-value is 0.0016
Thus, we reject the null hypothesis and this shows that there is overwhelming evidence that there is a link between gender groups and dr--unk-driving accidents.
Read more about chi-squares here:
https://brainly.com/question/4543358
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True or false it is not required that all school staff responsible for collection, review and maintenance of child immunization records take this child care immunization course 30 calendar days after employment and then annually
Answer:
False.
Explanation:
All relevant school staff must take immunization course annually.