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IgorC [24]
3 years ago
13

I need help on this :)

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
5 0

Answer:

<

Step-by-step explanation:

Need points :(

Anestetic [448]3 years ago
4 0

Answer:

Step-by-step explanation:

x+23+x=90

2x=67

x=33.5

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During the past year, Piazza's Clothiers sold a certain sweater at different prices: $42.95, $36.50, $40.75, $38.25, and $43.25.
SCORPION-xisa [38]
Range:$43.25-$36.50=$6.75 Mean:$42.95+$36.50+$40.75+$38.25+$43.25=$201.7 Median:$40.75 Mode:none The range is $6.75. The mean is $201.70. The median is $40.75. There is no mode.
3 0
4 years ago
Emile has calculated a one-tailed z-statistic of -1.97 and wants to see if it is significant at the 5% significance level.
Keith_Richards [23]

Answer:

Z = -1.65

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

What is the critical value for the 5% significance level?

One-tailed statistic, so Z with a p-value of 0.05.

Looking at the z-table, this is Z = -1.65, so this is the critical value for the 5% significance leve.

8 0
3 years ago
What is a qualitative variable
Mkey [24]

Answer:

Step-by-step explanation:qualitative variables are variables with no natural sense of ordering.

3 0
3 years ago
Read 2 more answers
Please help<br>An arithmetic sequence has this recursive formula
Natali [406]
The explicit formula is B
3 0
3 years ago
What is the value of the interquartile range of the data below? A box-and-whisker plot. The number line goes from 0 to 52. The w
Softa [21]

Answer:

The interquartile range is 12.

Step-by-step explanation:

In a box-and-whisker plot, the left edge of the box is the lower quartile and the right edge of the box is the upper quartile. The line dividing the box is the median. The end of the left whisker shows the minimum value. The end of the right whisker shows the maximum value.

In your question, the lower quartile is 29, the upper quartile is 41, while the median is 32. The minimum value is 10 and the maximum value is 51.

The formula for the interquartile range is as follows:

Interquartile Range = Upper quartile - Lower quartile

In this question, interquartile range = 41 - 29 which equals 12. Hence, the answer is 12.  

5 0
3 years ago
Read 2 more answers
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