Answer:
Step-by-step explanation:
Assuming that each draw is independent of the last and that each ball is equally likely to be selected makes this a binomial distribution
a.) first find the probability of selecting a black ball, 2/10 or .2
b.) Probability of slecting a red ball: 1/10 or .1
Less than 2 is X=0 + X=1
i will leave you to do the rounding
Answer: they got 40 votes
Step-by-step explanation:
because 10+10+10+10 eqauls 40 yw friend follow me on tiktok @tayleerosee
Answer:
(1,2)
Step-by-step explanation:
Answer:
The marketing department committed a Type I error because the marketing department rejected the null hypothesis when it was true. The probability of making a Type I error is 0.01.
Explanation:
Null Hypothesis: H₀ : µ = 58.58
Alternative Hypothesis: H₁ : µ> 58.58
A type I error is made by the marketing department if the null hypothesis is rejected when it is true and a type II error occurs, when the marketing department fails to reject the null hypothesis when it should be rejected.
The probability of making a Type I error is α, which is the level of significance you set for your hypothesis test, in our case 0.01 while the probability of making a Type II error is β, which depends on the power of the test.
Based on this we can therefore conclude that the marketing department committed a Type I error because the marketing department rejected the null hypothesis when it was true. The probability of making a Type I error is 0.01.
Answer:
3 : 1 : 2
Step-by-step explanation: