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Lemur [1.5K]
2 years ago
13

If v=-1, x=-2 and y= 3, find the value of: 3v + 2x

Mathematics
1 answer:
Dominik [7]2 years ago
6 0

Answer:

-7

Step-by-step explanation:

3 v + 2 x

  • Where, v = -1 and x = -2

3 ( - 1) + 2 ( -2)

-3 - 4

-7

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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.

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3 years ago
Solve problems <br>5 1/2×3 1/3​
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A cafe has 6 indoor tables and 2 outdoor tables. Each indoor table has 8 chairs, and each outdoor table has 5 chairs. How many c
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Indoor
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Answer:

The Answer:

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Step-by-step explanation:

x+2y=z

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The Answer:

y =  \frac{z - x}{2}

6 0
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