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Mathematics

1 answer:

KonstantinChe [14]3 years ago

5 0

Answer:

c. Not enough information

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A manufacturer of cream filled donuts collected data from its automatic filling process, the amount of cream inserted into the d

fenix001 [56]

Answer:

The correct value is t* = 2.797.

Step-by-step explanation:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 25 - 1 = 24

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 24 degrees of freedom(y-axis) and a two-tailed confidence level of $1 - \frac{1 - 0.99}{2} = 0.995$ . So we have T = 2.797.

4 0

3 years ago

There are as many girls as there are boys in a class. 8 girls went for a dance competition. now there are twice as many boys as

Rashid [163]

Let the number of girls be x and the number of boys be y

The number of boys is the same as the number of girls.
x = y
The number of boys is twice the number of girls when 8 girls left.
2(x - 8) = y

x = y ---------------- (1)
2(x - 8) = y -------- (2)

Sub (1) into (2)

2(y - 8) = y
2y - 16 = y
2y - y = 16
y = 16
There were 16 boys and 16 girls initially.

16 + 16 = 32
There were a total of 32 students in the class initially.

4 0

3 years ago

A spinner with 4 sections labeled a through d is spun and a coin flipped. What is the sample for the two events

ValentinkaMS [17]

Answer:

(HA, HB, HC, HD, TA, TB, TC, TD)

Step-by-step explanation:

Spinner : (a, b, c. d)

Coin : (H, T)

Sample space :

____ A _____ B ______ C ______ D

H __HA ____ HB _____ HC _____ HD

T__TA _____TB ______ TC _____ TD

Sample space : (HA, HB, HC, HD, TA, TB, TC, TD)

7 0

3 years ago

Solve the linear inequality 1.5−2.5x≤4.5

PilotLPTM [1.2K]

InequalitiesNumbersPercentagesScientific NotationCalculusDifferentiateIntegrateMatricesArithmeticInverseDeterminant
Quickmath step-by-step math solverExpressionEquationInequalityContact usSimplifyFactorExpandGCFLCMEnter expression, e.g. (x^2-y^2)/(x-y)Sample Problem1.5−2.5x ≤ 4.5SimplifySimplify1.5−2.5x≤4.51510−2510x≤4510

3 0

3 years ago

Read 2 more answers

How to find all possible functions with the given derivative ? If

Gre4nikov [31]

Answer:

a) $y = -\frac{1}{7}\cdot \cos 7\cdot t + C$ , b) $y = -\frac{1}{7}\cdot \cos 7\cdot t + 7\cdot \sin \left(\frac{t}{7}\right) + C$ .