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To find out the probability using normal distribution. Many species of terrestrial tree frogs that hibernate at or near the ground surface can survive prolonged exposure to low winter temperatures. In freezing conditions, the frog's body temperature, called its super-cooling temperature, remains relatively higher due to an accumulation of glycerol in its body fluids. Recent studies have shown that the super-cooling temperature of terrestrial frogs frozen at -6°C has a relative frequency distribution with a mean of - 2°C and a standard deviation of 0.3°C (The first of these studies was reported in Science, May 1983.) Consider the mean super cooling temperature, x , of a random sample of n = 42 terrestrial frogs frozen at -6°C.
a. Find the probability that x exceeds -2.05°C.
b. Find the probability that x falls between -2.20°C and -2.10°C.
Twelve doctor's offices were given 3 lab inspections with the following results:
The sample size n, the sample means, and the sample standard deviations for the two groups are given
Assume that the amount your town's population grows every year is fixed or constant. Utilize your equation in part b to approximate the population in the year 2030.
The number of degrees of freedom for the appropriate chi-square distribution in a test of independence is:
What is the probability of a fatal accident over a lifetime?
Use suitable one or two sided test for null hypothesis of no difference in them then changes rating between groups at 0.10 significance level.
Fit a multiple linear regression model for predicting the hospital duration using age, sex, body temperature, white blood cell counts, antibiotic use, blood culture and service
A school tracks the absences of pupils as part of a flu surveillance system. Regular reporting of absences among 25 students in grade 1 are taken, and based on these data, the long-run proportion of absences under normal conditions is estimated to..
Conduct the hypothesis test and compute the p-value. At a 0.05 level of significance, what is your conclusion?
Which of the following is true about the expected value of perfect information. It is the amount you would pay for any sample study.
To test whether there is any association between two variables using Chi-Square test for independence.
In ANOVA, which of the following is not affected by whether or not the population means are equal?
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