Question

psyppose age that cildren learn to walk is norm dusributed w mean
of 13 months and sr.dev.1. month ..15 randomly selected people were
asked what age they learned to walk ...

find that the sum of all afes for 15 rand.sel. will be greater
than 195 months .state command .

for 15 people,find prob.that the average that they learn to
walk is between 12 and 13.5 months ..

find IQR for average first rime

Answer #1

Suppose the age that children learn to walk is normally
distributed with mean 13 months and standard deviation 1.2 month.
13 randomly selected people were asked what age they learned to
walk. Round all answers to 4 decimal places where possible.
What is the distribution of XX? XX ~ N(,)
What is the distribution of ¯xx¯? ¯xx¯ ~ N(,)
What is the probability that one randomly selected person
learned to walk when the person was between 12 and 13.5 months...

Suppose the age that children learn to walk is normally
distributed with mean 13 months and standard deviation 2.1
month.
32 randomly selected people were asked what age they learned to
walk. Round all answers to 4 decimal places where possible.
a. For the 32 people, find the probability that the average age
that they learned to walk is between 12.7 and 13.2 months old.
b.Find the IQR for the average first time walking age for groups
of 32 people....

Suppose the age that children learn to walk is normally
distributed with mean 11 months and standard deviation 1.1 month.
14 randomly selected people were asked what age they learned to
walk. Round all answers to 4 decimal places where possible.
What is the probability that one randomly selected person
learned to walk when the person was between 9.5 and 12.5 months
old?
For the 14 people, find the probability that the average age
that they learned to walk is...

Suppose the age that children learn to walk is normally
distributed with mean 12 months and standard deviation 1 month. 7
randomly selected people were asked what age they learned to walk.
Round all answers to 4 decimal places where possible. What is the
distribution of X ? X ~ N( , ) What is the distribution of ¯ x ? ¯
x ~ N( , ) What is the probability that one randomly selected
person learned to walk when...

At what age do babies learn to crawl? Does it take longer to
learn in the winter when babies are bundled in clothes to restrict
their movement? Data was collected from parents who brought their
babies to New York University Infant Study Center to participate in
one of a number of experiments between 1988 and 1991. Parents
reported ages (in weeks) at which their child was first able to
crawl a distance of four feet within one minute. The researchers...

Q1:A research study claims that the average mean that the kids
start walking is almost 13 months. A researcher want to check if
the claim is true or false. A random sample of 20 kids was selected
randomly, with average mean and standard deviation 14 and 1 month
respectively. Check whether the hypothesis is true or false give
that t-tabulated =2.093
Q2: Resolve q1 if the sample size is 40
Q3:Suppose a sample of 16 light trucks is randomly selected...

The data on hospitalizations for swine flu are summarized in the
table below. Age Group Under 5 5 -14 15-29 30-44 45-60 Over 60
Total Hospitalized, Yes 8 12 13 15 0 1 49 Hospitalized, No 47 183
262 57 37 11 597 Total 55 195 275 72 37 12 646 Fill in the table
below with the expected counts if Age and Hospitalization are not
associated. Age Group Under 5 5 -14 15-29 30-44 45-60 Over 60 Total
Hospitalized,...

Home work#4 cont.
Sum#5
The following data give the speeds of 13 cars (in mph) measured by
radar, traveling on i-84
73, 75,69,68,78,70,74
76,72,79,68,77,72
Calculate the value of the 35th percentile.
Enter the exact answer in mph.
Sum#6
The following data give the annual salaries (in thousand dollars)
of 20 randomly selected health care workers.
50,71,57,39,45,64,38,51,33,62
75,40,69,44,77,61,58,54,64,59
A. Calculate the values of the three quartiles and the
interquartile range
Q1
Q2
Q3
IQR
B. Find the approximate value of the...

A person’s muscle mass is expected to be associated with age.
Some people also thought exercise time would be associated with the
muscle mass. To explore the potential relationships between muscle
mass and age, muscle mass and exercise time, a nutritionist
randomly selected 20 women from a population of women with age
ranging from 40 to 80 years old, and measured their muscle mass (a
score without unit) and exercise time (hours per month)
Patient
Age
MuscleMass
ExcerciseTime
1
43...

1. A random number generator is used to select a number from 1
to
500 ?(inclusively).
What is the probability of selecting the number 595
?
What is the probability?
2.Identify the sample space of the probability experiment and
determine the number of outcomes in the sample space.
-Randomly choosing an even number between 10 and 20,
inclusive
The sample space is?
(Use a comma to separate answers)
There are _____ outcomes in the sample space
3. Determine the number...

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