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A drug company want to know if new drug lowest the cholesterol below the target level of 120.A random sample of 25 questions has a mean of 115 and a standard deviation of 20 .Calculate a 99% confident interval around the mean.can we be confident that the population mean is below 120?
A company has established a goal of processing 95 percent of its orders on the same date of receipt. However, only 485 out of 500 orders were actually processed on the same day
Derive the probability that a receptor is occupied by a ligand using a model which treats the L ligands in solution as distinguishable particles.
A sample of 64 account balances from a credit card company showed an average balance of $1,040. A previously determined population standard deviation is $200.
Which of the statements about line-balancing is true and if a precedence relationship exists between tasks A and B, they cannot be assigned to the same work station.
Below are two data sets. Using descriptive statistics, discuss the two data sets in relation to each other. Both data sets come from an operation where potato chips are being placed in small connivance store bags that are to hold 6.0 oz.
Set up dummy coded dummy variables to contrast each of the other groups to Group 2, medium Anxiety; run a regression to predict exam performance (Y) from these dummy coded dummy variables.
The dimension is supposed to be 224 mm and the variance is unknown for the manufacturing process. Is there evidence that the mean dimension is not 221 mm? Assume the population is normally distributed. Use a = 0.05 and the critical value value met..
Compute standard normal z-score corresponding to value of x = 23. e. Determine P(x 23). G. Determine P(16
Suppose a firm evaluates the productivity of the three shifts of workers who work in their factory. Each shift's performance is measured based on the amount of output that is produced during the shift - day, evening, or swing shift.
State the decision rule. Compute the pooled estimate of the population varaince. Compute the test statistic
Using 5% level of significance, is there any difference in proportion of guests who would select the two resorts? What is your conclusion?
Managers at Beta Technologies, Inc., have collected current annual salary figures and potentially related data for a random sample of 52 of the company's full-time employees.
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