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____ [38]
3 years ago
12

Toby, Elisa, and Heidi each spent between $10 and $12 on fruit. Toby bought 6 items.

Mathematics
2 answers:
Sladkaya [172]3 years ago
8 0

Answer :

Toby: <u>4 of the $1.64, 1 of the $0.77, and 1 of the $3.59</u>

Elisa: <u>3 of the $3.59 </u>

<u />

Heidi: <u>3 of the $3.59, and 1 of the $0.77</u>

larisa86 [58]3 years ago
4 0

Answer:

Step-by-step explanation:

idk

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The monthly amounts spent for food by families of four receiving food stamps approximates a symmetrical, normal distribution. Th
e-lub [12.9K]

Answer:

95% of monthly food expenditures are between $110 and $190.

Step-by-step explanation:

Given : The monthly amounts spent for food by families of four receiving food stamps approximates a symmetrical, normal distribution. The sample mean is $150 and the standard deviation is $20.

To find : Using the Empirical rule, about 95% of the monthly food expenditures are between which of the following two amounts?

Solution :

At 95% of the data is between two standard deviation to left and right of the mean is given by,

To the left side, \bar{x}-2\sigma

To the right side, \bar{x}+2\sigma

We have given,

The sample mean \bar{x}=\$150

The standard deviation \sigma=\$20

Substitute in the formula,

\bar{x}-2\sigma

=150-2(20)

=150-40

=110

\bar{x}+2\sigma

=150+2(20)

=150+40

=190

Therefore, 95% of monthly food expenditures are between $110 and $190.

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