Question

PLEASE HELP?! ALGEBRA 2 WORK :l

Answer 1

i already have 1, 2, 5, and 8

Answer 2

1. Find the mean, median, and mode of the data set. Round to the nearest tenth.

Test scores on a math exam:

88, 89, 65, 62, 83, 63, 84, 63, 74, 64, 71, 82, 66, 88, 79, 60, 86, 63, 93, 99, 60, 85 (1 point)mean = 75.8
median = 79.5
mode = 63


mean = 75.8
median = 76.5
mode = 63


mean = 69.5
median = 76.5
mode = 63


mean = 69.5
median = 76.5
mode = 79.5



2. Make a box-and-whisker plot of the data.

Average daily temperatures in Tucson, Arizona, in December:

67, 57, 52, 51, 64, 58, 67, 58, 55, 59, 66, 50, 57, 62, 58, 50, 58, 50, 60, 63 (1 point)




3. Find the values of the 30th and 90th percentiles of the data.

129, 113, 200, 100, 105, 132, 100, 176, 146, 152 (1 point)30th percentile = 105
90th percentile = 200


30th percentile = 113
90th percentile = 200


30th percentile = 105
90th percentile = 176


30th percentile = 113
90th percentile = 176



4. What are the mean, variance, and standard deviation of these values? Round to the nearest tenth.

11, 11, 3, 1, 11, 11 (1 point)mean = 8
variance = 2.1
standard deviation = 4.7


mean = 11
variance = 2.1
standard deviation = 4.3


mean = 11
variance = 2.1
standard deviation = 4.3


mean = 8
variance = 18.3
standard deviation = 4.3



5. Mrs. Jones Algebra 2 class scored very well on yesterday’s quiz. With one exception, everyone received an A. Within how many standard deviations of the mean do all the quiz grades fall?

91, 92, 94, 88, 96, 99, 91, 93, 94, 97, 95, 97 (1 point)2
1
3
4

6. According to one study, 61% of the population swallow at least one spider per year in their sleep. Based on this study, what is the probability that exactly 7 of 10 randomly selected people have swallowed at least one spider in their sleep in the last year. (1 point)70%
22%
1%
34%

7. Use the Binomial Theorem to find the binomial expansion of the expression.

(d–5)6 (1 point)d6 + 6d5 + 15d4 + 20d3 + 15d2 + 6d + 1
d6 – 6d5 + 15d4 – 20d3 + 15d2 – 6d + 1
d6 + 30d5 + 375d4 + 2,500d3 + 9,375d2 + 18,750d + 15,625
d6 – 30d5 + 375d4 – 2,500d3 + 9,375d2 – 18,750d + 15,625

8. The bar graph shows the rents paid per month for apartments in an urban neighborhood. The curve shows that the rents are normally distributed.



Estimate the percent of apartment residents who pay from $600 to $749 per month. (1 point)93%
68%
43%
25%

9. The scores on an exam are normally distributed with a mean of 77 and a standard deviation of 10. What percent of the scores are greater than 87? (1 point)68%
16%
84%
2.5%

10. A grocery store will only accept yellow onions that are at least 3 in. in diameter. A grower has a crop of onions with diameters that are normally distributed with a mean diameter of 3.25 in. and a standard deviation of 0.25 in. What percent of the onions will be accepted by the grocery store? (1 point)34%
97.5%
84%
50%

Answer 3

for 1 put all the numbers in order from least to greatest

Answer 4

i said i got 1, 2, 5, and 8. thanx tho

Answer 5

oh sorry

Answer 6

okay well i dont know how to explain this but up here is the work
mean = [(4x11) + 3 + 1] / 6 = 8.0

variance = [4(11-8)^2 + (3-8)^2 + (1-8)^2] = 86.0

standard deviation = square root of 86 = 9.3

Answer 7

thats number 4

Answer 8

ok thanx

Answer 9

for 6. what is 7/10 times 100

Answer 10

3. First sort the values

129, 113, 200, 100, 105, 132, 100, 176, 146, 152

Answer 11

The 30th percentile is the point where 30% of the data is below that value

Answer 12

So if you have say 100 values, then 30% of that (0.3*100 = 30 values) are below the 30th percentile

Answer 13

sorry im not responding i left for a minute. thank you your alot of help

Answer 14

do you understand?

Answer 15

yea im startin to

Answer 16

do you want me to explain more ?

Answer 17

7. By the binomial theorem, the successive binomial coefficients for a 6th power
are 1, 6, 15, 20, 15, 6, 1