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3 years ago

I need help guys ASAP

Mathematics

1 answer:

kolezko [41]3 years ago

8 0

I believe it’s 3 3/4 or H :)

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A random sample of 64 bags of white cheddar popcorn weighed, on average, 5.23 ounces with a standard deviation of 0.24 ounce.

emmasim [6.3K]

Answer:

We conclude that cheddar popcorn weighed less than 5.5 ounces.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ =5.5 ounces

Sample mean, $\bar{x}$ = 5.23 ounces

Sample size, n = 64

Alpha, α = 0.05

Sample standard deviation, σ = 0.24 ounce.

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 5.5\text{ ounces}\\H_A: \mu < 5.5\text{ ounces}$

We use One-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{5.23 - 5.5}{\frac{0.24}{\sqrt{64}} } = -9$

Now, $z_{critical} \text{ at 0.05 level of significance } =-1.645$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, we conclude that cheddar popcorn weighed less than 5.5 ounces.

3 0

4 years ago

1. Solve this system by ELIMINATION and SUBSTITUTION in your note book. Make sure your work is neat and easy to read.

Andrews [41]

Answer:

(x,y) = (-219/9, -818/9)

Step-by-step explanation:

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3 years ago

Answer the photo below thanks!!<br> —Explain your answer please—

UkoKoshka [18]

(17X22)+((12X19)/2)=488cm^2

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3 years ago

(Multiple choice)

spayn [35]

I believe the answer is A

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3 years ago

A student attempted to generate an equivalent expression using the distributive property, as shown below:

Schach [20]

It is 6 was not multiplied by 3
The answer should be 6(m+3)= 6m+ 18

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4 years ago

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