4 years ago

Can someone help me with #2?? it would be much appreciated! :)

Mathematics

1 answer:

jekas [21]4 years ago

4 0

There you go? Is that right or no?

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Yesterday, Kevin had m baseball cards. Today, he gave 9 away. Using m, write an expression for the number of cards Kevin left

Scorpion4ik [409]

Answer:

m-9

Step-by-step explanation:

m represents how much cards he used to have he gave away 9 so u subtract

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3 years ago

The sugar content of the syrup is canned peaches is normally distributed. Assumethe can is designed to have standard deviation 5

andreyandreev [35.5K]

Answer: 0.50477

Step-by-step explanation:

Given : The sugar content of the syrup is canned peaches is normally distributed.

We assume the can is designed to have standard deviation $\sigma=5$ milligrams.

The sampling distribution of the sample variance is chi-square distribution.

Also,The data yields a sample standard deviation of $s=4.8$ milligrams.

Sample size : n= 10

Test statistic for chi-square : $\chi^2=\dfrac{s^2(n-1)}{\sigma^2}$

i.e. $\chi^2=\dfrac{(4.8)^2(10-1)}{(5)^2}=8.2944$

Now, P-value = $P(\chi^2>8.2944)=0.50477$ [By using the chi-square distribution table for p-values.]

Hence, the chance of observing the sample standard deviation greater than 4.8 milligrams = 0.50477

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3 years ago

A car travels at an average speed of

zheka24 [161]

I think it is 264 divided by 48 = 5.5 (5 and a half hours)

May want to check but I think this is correct

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4 years ago

Erik spends $680 for cable television service. The cable company offers a deal that promises Erik 3 free months of cable if he s

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3 years ago

Bert already has $50 but needs a total of at least $250 for his holiday. He gets paid $20 per day for delivering papers. What is

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Answer:

Bret would need to work for 8 days.

Step-by-step explanation:

He has $50 and needs to pay $250. 250-50= 200. £20 is $27.59 200/27.59 =7.24 If £20 is a typo then 10 days.

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2 years ago