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Statistics
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Questions (20,054)
3. What is the correlation coefficient for the set of data? Round your answer to the nearest thousandth.
0.014 0.989 0.075 4.
12 answers
asked by
DO IT RIGHT♥
6,620 views
If the probability of a newborn child being female is 0.5, find the probability that in 100 births, 55 or more will be female.
5 answers
asked by
Kayla
11,710 views
Find the area under the normal curve in each of the following cases.
1. Between z = 0 and z = 1.63 2. Between z = 1.56 and = 2.51
10 answers
asked by
Sylvia
10,729 views
Imagine you're a researcher and you need to perform a one-sided test of an alternative hypothesis. You decide to conduct a
4 answers
asked by
Jim
2,832 views
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of − 1.34?
4 answers
asked by
robyn
708 views
if the mean of these numbers (20,15,32,18) is 21 what is the missing number?
6 answers
asked by
imaan
634 views
A normal distribution has a mean of 120 and a standard deviation of 20. What range of scores would form the middle 60%?
3 answers
asked by
Anonymous
921 views
Compare Measures of Variation Quick Check
1 of 51 of 5 Items Question The shoe sizes for a varsity field hockey team are: 5.5,
2 answers
asked by
andrew michal mcmahon
95 views
Your teacher surveyed the class to determine the number of hours that each student spent on social media. Your teacher created a
1 answer
asked by
Eli
113 views
A statistician collects the following height data in inches for a school district. The statistician says that it is a normal
1 answer
asked anonymously
462 views
The randomly selected delivery times, in minutes, of two restaurants are as follows. Which restaurant has more consistent
1 answer
asked anonymously
49 views
The mean height of a group of plants is 20 centimeters, with a standard deviation of 3 centimeters. What is the probability that
3 answers
asked anonymously
41 views
A local school board believes there is a difference in the proportion of households with school-aged children that would support
1 answer
asked anonymously
33 views
On the math test Samantha meets four of the 20 question what is the relative frequency of correct response a 0.2 b0.860.4 D 0.16
1 answer
asked anonymously
21 views
The mean of each dataset that follows is 62. Which dataset is less spread out? Justify your answer using the mean absolute
1 answer
asked by
yes
33 views
A coffee shop owner is interested in determining what people think about the new coffee flavor. Which of the following is the
1 answer
asked anonymously
23 views
Fifteen students are randomly selected from two different classes. They were asked how many books they read during the
summer.
1 answer
asked by
blox fruitWhich statement best identifies one qual
41 views
There are 628 serious and tans high school tan survey is 120 randomly chosen students about their favorite movie genre the
1 answer
asked anonymously
36 views
Two fertilizers are applied to randomly selected potato plants. After several weeks, the potatoes are weighed. The weights in
1 answer
asked anonymously
32 views
Here are the math test scores of 10 randomly selected students from Class 1 and Class 2. Class 1: 75 80 84 79 92 86 88 86 86 90
1 answer
asked anonymously
32 views
The ages, in years, of randomly selected employees are 34, 41, 28, 35, 27, 44, 29, 33, 41, and 39. Watch THE MODE TOADS video to
1 answer
asked anonymously
15 views
Use the image to answer the question.
A scatterplot on a coordinate plane of quadrant 1 is titled as Snow Accumulation in Inches
1 answer
asked anonymously
17 views
1. Find the mean, median, and mode of the data set:
15, 16, 21, 23, 25, 25, 25, 39 a.mean = 23.6, median = 25, mode = 24 b.mean =
27 answers
asked by
TTR+S<3
9,996 views
The box-and-whisker plots show data for the test scores of four groups of students in the same class. Which plot represents data
17 answers
asked by
Anonymous
6,543 views
81,85,82, 93,85,84,95,87,88,91
Find the standard deviation.
7 answers
asked by
Charles HELP ME PLEASE IDK WHAT TO DO
2,953 views
There are 528 students in Pablo's high-school. Pablo's surveyed 130 randomly chosen students about their favorite ice cream
2 answers
asked by
Me
242 views
A calculator manufacturing company checks 500 calculator units, and 25 of them have non-functioning keys. Approximate the
7 answers
asked by
idk
150 views
The data from two random samples of 100 students regarding what pet they own is given below.
Dog Cat Bird Total Sample 1 54 38 8
2 answers
asked anonymously
92 views
To determine the average height of trees in a national forest, 10 trees are randomly selected. Their heights in feet are 85.4,
13 answers
asked by
..
511 views
The low temperatures during one week in January were 2°, −3°, −9°, −11°, 1°, −8°, and −9°. What was the median
1 answer
asked by
Math
258 views
\, \lambda \sim \textsf{Exp}(\alpha ) \, for some \, \alpha >0 \, and conditional on \, \lambda \,, \, X_1,\ldots ,X_
2 answers
asked anonymously
110 views
15. A report states the proportion of employees at a large company who worked overtime in the last month.
A poll randomly
1 answer
asked by
Jeon
140 views
Does the mean or median better describe the shape of this data set?
46, 54, 43, 57, 50, 62, 78, 42(1 point)
15 answers
asked by
unkown
84 views
The mean height of 15 boys in a class is 162cm and the mean height of 10 girls is 152cm. Find the height of the 25 pupils.
5 answers
asked by
Edward
1,822 views
Which measure of central tendency does 4 represent for the data shown?
1, 3, 4, 6, 9
17 answers
asked by
TheJeRamiYt
1,724 views
You weigh a group of eight kittens for 6 days and get the following data (in lb.):
1.6, 1.4, 1.1, 1.8, 1.3, 1.8, 1.2, 1.4 Select
6 answers
asked by
...
1,869 views
Maria handed in her final data management
project last week. The class mean was 83% with a standard deviation of 8. If Maria’s
6 answers
asked by
Brandon
1,371 views
A number of candidates interviewed recently revealed that 142 applied admission into university of Lagos, 122 for Illorin and
5 answers
asked by
Blessed
448 views
A survey found that 25% of pet owners had their pets bathed professionally rather than do it themselves. If 18 pet owners are
5 answers
asked by
Anonymous
9,252 views
Scores on a test have a mean of 66 and Q3 is 80. The scores have a distribution that is approximately normal. Find the standard
4 answers
asked by
Leozap
5,344 views
Can a percentile have the VALUE of 517?
Can a percnetile have the VALUE -5.8? Can a percentile have the RANK 517? Can a
4 answers
asked by
will
914 views
Suppose that Θ , X1 , and X2 have zero means. Furthermore,
Var(X1)=Var(X2)=Var(Θ)=4, and Cov(Θ,X1)=Cov(Θ,X2)=Cov(X1,X2)=1.
4 answers
asked by
Ken
2,892 views
Two similar data sets are being compared. The standard deviation of Set A is 4.8. The standard deviation of Set B is 6.5.
Which
5 answers
asked by
Hi
2,626 views
Find the area under the standard normal curve:
I. to the right of z = -2.32 II. to the left of z = -2.32 Can someone please help
4 answers
asked by
Jessup
2,314 views
Suppose you have a mean standardized score of 1500 points with a standard deviation of 150 points. This data is normally
4 answers
asked by
Destiny
2,939 views
You want to learn about the Ferris–wheel riding habits of people, so you ask those leaving a theme park, “How many times did
3 answers
asked by
Jaylin
1,606 views
Fifteen smart cars were randomly selected and the highway mileage of each was noted. The analysis yielded a mean of 47 miles per
3 answers
asked by
Arturo
3,436 views
What is the minimal sample size needed for a 99% confidence interval to have a maximal margin of error of 0.06 if there is no
4 answers
asked by
Lynn
3,369 views
in a school,7/10 of the pupils like mathematics. half of those who like mathematics are girls.if there are 240 pupils in the
5 answers
asked by
Daisy
1,836 views
Find the area under the standard normal curve between z = 0 and z = 1.45.
5 answers
asked by
Anonymous
1,550 views
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