A company that produces top-of-the-line batteries claims that its batteries are good, on average, for more than 65 months. A consumer protection agency tested 25 such batteries to check this claim. It found that the mean life of these 25 batteries is 63.4 months, and the standard deviation is 3 months. If we test the company's claim at a 5% significance level, what is the decision? Assume normality. Fail to reject Ho because the test statistic is in the critical region and the p-value is greater than the significance level. Reject Ho because the test statistic is not in the rejection region and the p-value is greater than the significance level. Reject Ho because the test statistic is in the critical region and the p-value is greater than the significance level. Reject Ho because the test statistic is in the rejection region and the p-value is less than the significance level. Fail to reject Ho because the test statistic is not in the critical region and the p-value is greater than the significance level. OOC

Q: What is the coefficient of x²wa³b in the expansion of (x+y+w+a+b)??

A: To determine the coefficient of x2wa3b in the expansion of x+y+w+a+b7.

Q: How many terms are there in the multinomial expansion of (x₁ + x₂ + ...........+xr)n?

A: Multinomial expansion :  (X1 + X2 + X3 + ......Xr)n  We have to calculate no. of terms in this…

Q: 12 Find the term of (a – 3b)" that has b in it.

A:

Q: 2) 36³x=¹

A:

Q: Find the term indicated in the expansion (x + 2y)6; third term.

A: Find the term indicated in the expansion (x + 2y)6; third term.

Q: 7 2 3k+1= [A] k = 2

A: Consider the equation ∑n=273k+1=A We have to find the value of A Expand the summation of left hand…

Q: What is the coefficient of a b³c² in the expansion of

A: In this question, we need to find the coefficient of a4b3c2.

Q: 4. Fill in the following contingency table with the number of observations that fall into each com-…

A: x1 = number of colored oranges from Skittles brand = 77 x2 = number of colored oranges from M &…

Q: (n + 4)3 =

A: Given query is to expand (n+4)3

Q: 6/9 +  5/18 + 1 3/6

A:

Q: Expand the expression for Mr Taylor.

A: The previous solution is incorrect. Please follow this one.

Q: What is the 5th term in the expansion of (2x²y³ – ¹y)° O 14.25x7 y 20 15.75x10 y 19 15.05x¹0y17…

A: Given: 2x2y3-14y9=2x2y3-y49

Q: 18(9+7)+3

A: 18(9+7)+3

Q: W 4. What is the value of the 4th term of the expansion (a + b)"? O a5 O 5a*b O 10a²63 10a b?

A:

Q: A report announced that the median sales price of new houses sold one year was $231,000​,and the…

A:

Q: 5. Find the coefficient of a¹¹b4 in the expansion of (a + b)¹5.

A:

Q: The Challenger Disaster. In a letter to the editor that appeared in the February 23, 1987, issue of…

A: a.Probability that none of the “critically 1” items would fail is given by: