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3 years ago

1/6x2+(7/10 - 4/5)+1/2

Mathematics

1 answer:

nexus9112 [7]3 years ago

8 0

1/3 + (-1/10)+1/2
Remove parenthesis
1/3 - 1/10 + 1/2

ANSWER: 11/15
ALTERNATIVE FORM 0.73

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Ksenya-84 [330]

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4 years ago

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3 years ago

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Lexie, a bowler, claims that her bowling score is more than 140 points, on average. Several of her teammates do not believe her,

Crazy boy [7]

Answer:

The test statistic is $t = 3.744$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 140$

The The level of significance is $\alpha = 0.05$

The sample size is n = 18

The null hypothesis is $H_o : \mu = 140$

The alternative hypothesis is $H_a : \mu > 140$

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The standard deviation is $\sigma = 17$

Generally the test statistics is mathematically represented as

$t = \frac{\= x - \mu }{ \frac{ \sigma}{ \sqrt{n} } }$

substituting values

$t = \frac{ 155 - 140 }{ \frac{ 17 }{ \sqrt{18} } }$

$t = 3.744$

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3 years ago

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My name is Ann [436]

Answer:

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Step-by-step explanation:

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4 years ago

In a right skewed distribution, a) the median equals the arithmetic mean b) the median is less than the arithmetic mean c) the m

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Answer: B

Step-by-step explanation:

A is a standard bell curve

B is skewed right because a few numbers that are larger drag the mean much more than the median

C it would be skewed left because of the reverse of b

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