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If the two regression cofficients are 0.8 and 0.6 the cofficient of correlation is -0.69
he probability of individuals with blood
types A, B, AB and 0 are 0.45, 013, 0.06 and
0.36, respectively. A geneticist tested 100
individual blood types and found that 40 had
type A, 18 had type B, 5 had type AB and 37
had type 0. Use goodness of fit test at 5%
level of significance to test whether the
observed frequencies closely correspond to
the theoretical ones.
[You may like to use the values]
types A, B, AB and 0 are 0.45, 013, 0.06 and
0.36, respectively. A geneticist tested 100
individual blood types and found that 40 had
type A, 18 had type B, 5 had type AB and 37
had type 0. Use goodness of fit test at 5%
level of significance to test whether the
observed frequencies closely correspond to
the theoretical ones.
[You may like to use the values]
The proportion of male and female students in a class is found to be 1 : 2. What is the probability that out of 4 students selected at random with replacement (i) 2 or more will
be females (ii) no male student is selected ?
be females (ii) no male student is selected ?
what surface is represented by x^2 + y^2 = 9z ? Give a rough sketch of it. Obtain the section
of this surface by the plane y = 0.
of this surface by the plane y = 0.
a baker filled a measuring cup with 3/4 cup of water, he poured 1/2 of the water in a batter, then splliet 1/8 cup of water on floor. how much water will the bake r need to add to what is left in the cup to have 50% more that he started with?
I bought two packets of apples, 25 in each packet. The mean and standard deviation of weights of apples in the first packet are 235 and 3; and the mean and standard deviation for the second packet are 237.5 and 4. Write down the mean and standard deviation formula for all the fifty apples and compute them.
A consumer charges a $2,530.16 purchase on their credit card. The card has a daily interest rate of 0.042%. If the consumer pays off the balance at the end of 30 days, how much more in interest will they pay for the purchase?
Math
How many children read more that 9 books 7children read 4 books 1child read 5 books that means that 2 children read 6 books explain how she can work this out from
the chart
the chart
An insurance company checks police records on 593 accidents selected at random and notes that teenagers were at the wheel in 83 of them.
a) Construct the 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.
a) Construct the 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.
A recent study of 3100 children randomly selected found 24% of them deficient in vitamin D.
a) Construct the 98% confidence interval for the true proportion of children who are deficient in vitamin D.
a) Construct the 98% confidence interval for the true proportion of children who are deficient in vitamin D.
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#331389 on Nov 2022
#331389 on Nov 2022