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love history [14]
3 years ago
8

The chi-square test assesses whether the _____ observed in a cross-tabulation diverge from those one would expect under the null

hypothesis of no difference between groups.
Mathematics
1 answer:
pantera1 [17]3 years ago
3 0

Answer: Frequencies .

Step-by-step explanation:

In statistics theory the chi-square test statistic is calculated by considering each cell and the expected frequency is subtracted from the observed frequency after that the difference is squared, and the total is divided by the expected frequency. This is highlight that the key focus of the chi-square test is the frequencies .

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Philip rode his bicycle 9 2/5 miles per hour. if he rode for 3/4 of and hour, how many miles did he cover
adelina 88 [10]

Answer:

Distance he covers in \frac{3}{4} of an hour = 7\frac{1}{20} miles.

Step-by-step explanation:

Phillip rode his bicycle at 9\frac{2}{5} miles per hour.

To find distance he covers in \frac{3}{4} of an hour.

Solution:

Speed at which Phillip rides = 9\frac{2}{5} miles per hour

Time for which he cycles = \frac{3}{4} of an hour

Distance covered in miles =Speed\times Time = 9\frac{2}{5} \times \frac{3}{4}

To multiply mixed numbers we need to convert them to fractions.

[A\frac{b}{c}=\frac{Ac+b}{c}]

9\frac{2}{5} \times \frac{3}{4}

⇒ \frac{(9\times 5)+2}{5} \times \frac{3}{4}

⇒ \frac{47}{5} \times \frac{3}{4}

Then we simply multiply the numerators and denominators.

⇒\frac{141}{20}

Then we convert back to mixed fraction by dividing numerator by denominator and writing the quotient as whole number with fraction (remainder as numerator and denominator being the divisor)

⇒ 7\frac{1}{20} miles.

∴ Distance he covers in \frac{3}{4} of an hour = 7\frac{1}{20} miles.

3 0
3 years ago
Quadrilateral ABCD has vertices at A(-3, 3), B(0, 4), C(3, 3),and D(0,2). What word below best describes this quadrilateral?
BaLLatris [955]

9514 1404 393

Answer:

  D)  Rhombus

Step-by-step explanation:

The figure is a parallelogram with equal-length sides, so is a rhombus.

8 0
3 years ago
Which weighs more, one that weighs 2/3 of a pound or one that weighs 5/6 of a pound?
xeze [42]

Answer:

5/6 of a pound

Step-by-step explanation:

When you multiply 2/3 by 2 it will equal 4/6 making it smaller then 5/6. and divide the fraction and you will see which is smaller.

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3 years ago
Wetlands offer a diversity of benefits. They provide a habitat for wildlife, spawning grounds for U.S. commercial fish, and rene
Rainbow [258]

Answer:

A) see attachment

B)a, d

Step-by-step explanation:

A) The attachment shows the stem and leaf diagram

B) The data is strongly on lower side that is from 20% to 60% and is therefore skewed to left.

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3 years ago
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Soloha48 [4]
20. Coefficients are always the number. The letters are variables
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