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irinina [24]
3 years ago
6

A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 428428 gram setting.

It is believed that the machine is underfilling or overfilling the bags. A 7171 bag sample had a mean of 433433 grams with a variance of 441441. Assume the population is normally distributed. A level of significance of 0.010.01 will be used. Specify the type of hypothesis test.
Mathematics
1 answer:
Lunna [17]3 years ago
3 0

Answer:

z-test

Step-by-step explanation:

-A z-test is a test used to determine the difference in two population means of known variances.

-The sample size has to be large enough, n\geq 30(n=71).

-And, the population must follow a normal distribution.

-Since our sample meets all the above conditions, the hypothesis test used is a z-test

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50,60,72 find the 8th term airthmetic and geometric sequence
Savatey [412]

Answer:

8th term is 179.15904

Step-by-step explanation:

The sequence is geometric with a common ration = 6/5

r = 60/50 = 72/60 = 6/5

Use the formula

a_{n} = ar^{n - 1}

In your case a = 50, r = 6/5 and n = 8

a_{8} = 50(6/5)^{8 - 1} \\          = 50(6/5)^{7} \\          =  50(279936/78125)\\          =   179.15904

4 0
3 years ago
Hana's height is given as 162 cm, correct to the nearest cm.
SashulF [63]

Answer:

upper is 2 lower Po is 2 step 1 I added after what the answer is that I divide it then that's the answers

6 0
2 years ago
an engineer has a 54 inch wire that she has to cut into two pieces so that one piece is 8 inches shorter than the other find the
Brilliant_brown [7]

Hey there!!

Let's take the length of the bigger piece as x inches

Then, the length of the smaller piece would be x - 8 inches

The sum of these lengths would be 54 inches

... x + x - 8 = 54

... 2x - 8 = 54

... Add 8 on both sides

... 2x = 62

... Divide 2 on both sides

... x = 31

Hence, the length of the bigger piece = 31 inches

The length of the smaller piece would be = 31 - 8 = 23 inches

Hope my answer helps!!

4 0
3 years ago
Two golfers completed one round of golf. The first golfer had a score of +6 and the second golfer had a score of –3. How many mo
Monica [59]

                                             Question 16

Given that two golfers completed one round of golf.

It is stated that the first golfer had a score of +6 and the second golfer had a score of -3.

  • Let suppose 'x' be the number of shots the first golfer took.

It is clear that the first golfer is 6 over par, while the second golfer is under 3.

Thus, the equation becomes:

-3 + x = 6

adding -3 to both sides

-3+3+x = 6+3

simplify

x = 9

Thus, the second golfer has taken 9 more shorts.

                                             Question 17

When we talk about credit, it means:

Credit = +

When we talk about debt, it means:

Debit = -

Thus,

Credit = +84

Debt = -29

Balance = 84 + (-29)

              = 84 - 29

               = 55

Thus, the balance is: 55

6 0
2 years ago
From Mississippi Solo Book:
Ede4ka [16]
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