The number of bricks on the bottom row was 21, and each row above it had 2 fewer
2 answers:
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Answer:
1.89 is the standard deviation of households who own a riding mower
Step-by-step explanation:
Let the random variable X denote the number of households owning a riding lawn mower. From the given information, X will be a Binomial random variable with parameters; n = 17 and p = 30% = 0.3
The standard deviation of X;
Answer:
p -
Step-by-step explanation:
collect like terms
- p +
p +
- 1
= - p +
p +
-
= - p +
p -
= p -