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Dvinal [7]
3 years ago
13

Help! I know 10b but i dont understand 10a :( pls explain if you can:)

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
6 0
So it would be one half of the base times the hight
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Step-by-step explanation:

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This is math????

Step-by-step explanation:

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A book claims that more hockey players are born in January through March than in October through December. The following data sh
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Complete question :

Birth Month Frequency

January-March 67

April-June 56

July-September 30

October-December 37

Answer:

Yes, There is significant evidence to conclude that hockey​ players' birthdates are not uniformly distributed throughout the​ year.

Step-by-step explanation:

Observed value, O

Mean value, E

The test statistic :

χ² = (O - E)² / E

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χ² = ((67-47.5)^2 /47.5) + ((56-47.5)^2 /47.5) + ((30-47.5)^2/47.5) + ((37-47.5)^2/47.5) = 18.295

Degree of freedom = (Number of categories - 1) = 4 - 1 = 3

Using the Pvalue from Chisquare calculator :

χ² (18.295 ; df = 3) = 0.00038

Since the obtained Pvalue is so small ;

P < α ; We reject H0 and conclude that there is significant evidence to suggest that hockey​ players' birthdates are not uniformly distributed throughout the​ year.

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8. The average age of 3 boys is 15 yrs. But if one is not considered,
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Step-by-step explanation:

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