QUESTION 7 The annual report of a service company published that the average length of phone call of the company's customer care is 5.6 minutes with standard deviation 0.98. Fifteen calls were taken as a sample to get his result. Find a 95% confidence interval. O (4.99, 6.23) O (5.10, 6.10) (5.15, 6.05) O (5.06, 6.14)

Q: 2/18 – 12/32 + 3V50

A: The solution is given below in the next step:

Q: 3 -4- -0- 4. 2.

A:

Q: A = 6 -2 -2 10 -3 5 1 ---3-0 C=0-2 a = 1, b = [3 08]. -10 1 . B 5 2 11 9 4 4 7 0 0 11

A: We have to solve given Questions.

Q: 5 -100 12 8

A: Solve the given

Q: 40 -50-

A:

Q: 8.20+2

A:

Q: 2/5+4/8

A: We have to find the sum

Q: 12 5(.8)0

A: We can solve given problem by using G.P series.

Q: 10 8/10 + 9 7/12=

A:

Q: 6 2/5 + 1 3/10

A:

Q: 3 1/4 + 7 1/8

A:

Q: 8+ 6 10. 9-2

A: This question is related to addition, subtraction and devision of numbers, we will solve it using…

Q: 5/14+1/6

A: 514+16=15+742

Q: 22n+1 3n+1 2.

A:

Q: 4 3/4 - 2 5/6

A: Given that the expression is

Q: 4 11  ✕  5 9

A: Consider the given expression as 411×59. 411×59=4×511×9=2099

Q: expand (a-b)7

A: The solution is given in the next step.

Q: 1+7/7 + 8

A: Answar would be 10

Q: 2

A: The Laplace inverse can be found by splitting the expression into three parts as it have power of 3…

Q: 7,20

A:

Q: sing the geometry of the graph ,evalvate the definite integrals.

A: As this is a multiple subpart question according to the Bartleby Answering rule, only first three…

Q: 16 2/5- 8 4/9

A:

Q: 5. 110 (x + 12)°

A: given alternate exterior angles are equal.

Q: 42.1+6.9

A: Given that  42.1+6.9 Then the value of 42.1+6.9

Q: 9 1/2-8 3/4+10

A: We have to find solution of given expression.

Q: ne binomial:

A:

Q: tions exist, you o = x %3D

A:

Q: 6   9,171.6

A:

Q: Expand (a −b)4

A:

Q: 81 (1) 420

A:

Q: Evaluate (33)2

A: Given: 332Power rule amn=am×nSolution:332=33×2=36(33)2=729

Q: 56 10

A: The objective is to evaluate the value for