The unit rate is 9 an hour
Answer:
P(X=2|X≥1) = 0.0199973.
Step-by-step explanation:
The chance that each of the three children is allergic to peanuts is independent. Each with a chance of 2% = 0.02.
X follows a binomial distribution with
- 3 trials, and
- a chance of "success" of 2% = 0.02.
.
The event 
includes
In other words, 
implies that 
.
.
.
.
12 + x = 0.80(20+x)
12 + x = 16 + 0.80x
12 = 16 -0.2x
-4 = -0.2x
x = -4/-0.2 = 20
they need to win 20 more games
15x+25y=1875
Let
y=95-x
15x+25 (95-x)=1875
Solve for x
15x+2375-25x=1875
15x-25x=1875-2375
-10x=-500
X=500/10
X=50 the number of $15 items
Y=95-50=45 the number of $25 items
Based on the results, Julian’s data shows that the recent
seasons’ average jean price is not $75 is valid
<span>
To add, </span><span>the null hypothesis is rejected if the p-value is less than a
predetermined </span>level, α. α is called the significance level, and is the
probability of rejecting the null hypothesis given that it is true (a type I
error). It is usually set at or below 5%.
, and
.