Answer:
The probability that the customer is charged incorrectly on at most 2 items is 3.979 × 10⁻².
Step-by-step explanation:
To solve the question, we note that we proceed with the binomial distribution formula as follows
Number of times the customer is incorrectly charged out of ever 10 items = 4
Therefore, the probability that the customer is incorrectly charged is 4/10 = 0.4
That is p(incorrect) = 0.4
Then the probability that the customer is charged incorrectly on at most 2 items is
P(x≤2) = P(x=0) + P(x=1) + P(x=2)
= ₙC
×
×
=
P(x=0) = ₁₄C₀ ×0.4⁰× 0.6¹⁴ = 7.836 × 10⁻⁴
P(x=1) = ₁₄C₁ ×0.4¹× 0.6¹³ = 7.314 × 10⁻³
P(x=2) = ₁₄C₂ ×0.4²× 0.6¹² = 3.169 × 10⁻²
∴ P(x≤2) = 7.836 × 10⁻⁴ + 7.314 × 10⁻³ + 3.169 × 10⁻² = 3.979 × 10⁻²
P(x≤2) = 3.979 × 10⁻².
<h3>
Answer: 23</h3>
Explanation:
Replace c with 5. Use PEMDAS to simplify
5c - 2 = 5*5 - 2 = 25 - 2 = 23
Answer:
Step-by-step explanation:
so he worked 132 hrs in 4 weeks..he worked 6 days per week....
6 * 4 = 24 days...so he worked 132 hrs in 24 days
132 / 24 = 5.5 (or 5 1/2) hrs per day <===
Answer:
43200 assuming he put 5000 in the fund every month not just the first one.
Step-by-step explanation:
I hope this helps.