Assume that the population has a normal distribution. 5) The mean replacement time for a random sample of 20 washing machines is 9.0 years and the standard deviation is 24 years Construct a 99% confidence interval for the standard deviation, o, of the replacement times of all washing machines of this type. A) 1.7 yr

Q: 3/20 + 13/15 combine.

A:

Q: w + 4 w + 10 6. 8.

A:

Q: 2/18 – 12/32 + 3V50

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

Q: a3-16a

A: a³−16a ⇒a(a²−16) ⇒a(a² −4²) ⇒a(a+4)(a−4)

Q: 4. 3*+4 72x-1

A:

Q: 4 3/4 - 2 5/6

A: Given that the expression is

Q: Consider F(x) = = F(0) = 0 F'(3) = 6 F'(1) = 0 O F'(4) = 10 F'(2) = 2 I tf(t) tf(t) dt. Which of the…

A:

Q: find  3/4 + 1/8

A:

Q: graph shows the relationship between the volume of the dilated box and the scale factor. diusuon 5.…

A:

Q: -11/6+3/4

A:

Q: w + (-7), when w = - 1

A: The expression is given by w+(-7) To evaluate: The value of the expression when w=-1.

Q: (4x)2

A: To evaluate(4x)2

Q: -5 -2 1

A:

Q: 2. 9=x-2y 3x + 5 = 2y

A: The given equations are system of linear equations in variables x and y. We solve these by…

Q: X5 y / x4 y6

A: Given: x5yx4y6

Q: 4a5b• V18a3b6

A: We have to find

Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.