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Vikentia [17]
3 years ago
12

Is 1/3 greater than 0.4

Mathematics
1 answer:
Tom [10]3 years ago
4 0

Answer:

No because 1/3 in decimal form is 0.333333 which is less than 0.4

Step-by-step explanation:

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The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 257.62 and a standard deviation of
Effectus [21]

Answer:

(a) Approximately 68 % of women in this group have platelet counts within 1 standard deviation of the mean, or between 195.5 and 319.7.

(b) Approximately 99.7% of women in this group have platelet counts between 71.3 and 443.9.

Step-by-step explanation:

We are given that the blood platelet counts of a group of women have a bell-shaped distribution with a mean of 257.62 and a standard deviation of 62.1

Let X = <u><em>the blood platelet counts of a group of women</em></u>

So, X ~ Normal(\mu=257.62, \sigma^{2} =62.1^{2})

Now, the empirical rule states that;

  • 68% of the data values lie within the 1 standard deviation of the mean.
  • 95% of the data values lie within the 2 standard deviations of the mean.
  • 99.7% of the data values lie within the 3 standard deviations of the mean.

(a) The approximate percentage of women with platelet counts within 1 standard deviation of the mean, or between 195.5 and 319.7 is 68% according to the empirical rule.

(b) The approximate percentage of women with platelet counts between 71.3 and 443.9 is given by;

       z-score of 443.9 =  \frac{X-\mu}{\sigma}

                                   =  \frac{443.9-257.62}{62.1}  = 3

       z-score of 71.3 =  \frac{X-\mu}{\sigma}

                                =  \frac{71.3-257.62}{62.1}  = -3

So, approximately 99.7% of women in this group have platelet counts between 71.3 and 443.9.

5 0
3 years ago
Which of the following statements is not true about the numbers 7 and -7? They are opposite numbers. They form a zero pair. They
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We need to find which statement is not true:

Let us check each statement:

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7-7 =0, the statement is true.

- They have the same absolute value

The absolute value is the not negative value no matter the sign.

Hence, l7l= 7 and l-7l= 7.

-They have a sum of -14.

Then:

7+(-7) = 0

Therefore, the last statement "They have a sum of -14" is not true.

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A line is drawn so that it passes through the points (-3,0) and (1.4). What is the slope of the line?
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0000000000000000

Step-by-step explanation:

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