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forsale [732]
3 years ago
8

Use any method to work these out, but do NOT use a calculator.

Mathematics
1 answer:
Artemon [7]3 years ago
4 0

Answer:

A) 216

B) 64.5

Step-by-step explanation:

         40

x     5.40

___________

You can solve it like that, I don't remember what it is called.

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The commercial for the new Meat Man Barbecue claims that it takes 10 minutes for assembly. A consumer advocate thinks that the c
Andrews [41]

Answer:

There is enough evidence to make the conclusion that the population mean amount of time to assemble the Meat Man barbecue is not equal to 10 minutes (P-value=0.009).

Step-by-step explanation:

We have to perform an hypothesis test on the mean.

The null and alternative hypothesis are:

H_0: \mu=10\\\\H_1: \mu \neq 10

The significance level is \alpha=0.05.

The test statistic t can be calculated as:

t=\frac{M-\mu}{s/\sqrt{N} } =\frac{11.2-10}{3.1/\sqrt{50} }=2.737

The degrees of freedom are:

df=N-1=50-1=49

The P-value (two-tailed test) for t=2.737 and df=49 is P=0.00862.

This P-value (0.009) is smaller than the significance level, so the effect is significant. The null hypothesis is rejected.

There is enough evidence to make the conclusion that the population mean amount of time to assemble the Meat Man barbecue is not equal to 10 minutes.

7 0
3 years ago
How do you solve 2/3n-2/3=n/6+4/3
amm1812

Answer:

n=4

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A book store was selling 5 books for $27.75. Online the you could buy 6 books for $32.16. Which place has a lower unit price
Svetllana [295]
27.75/5 = $5.55 per book
32.16/6 = $5.36 per book
The online store is the cheapest because it has the lowest unit rate
4 0
3 years ago
The password for a new online gaming site must contain three letters followed by four digits . The digits can be repeated by but
vesna_86 [32]

Answer:

If I am correct, then it is 1,867,866,560 .

Share

Step-by-step explanation:

7 0
3 years ago
Anita buys a computer for $391 in a sale. The sale price is 15% less than the original price. Calculate the original price of th
iVinArrow [24]

Answer:

449.65

Step-by-step explanation:

391x.15=58.65

$58.65+$391= 449.65

5 0
2 years ago
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