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The following companies are interested in conducting a market survey of their products/ services. Explain the possible sampling techniques that they might choose.
(a) High-end automobiles
(b) Cooking range
(c) Cell phones
(d) Boutique clothes
(e) City municipal services
(f) State revenue department
(g) Home insurance company
(h) Patients in a health care facility
(i) Physicians in a health care facility.
a data set consists of 83 test scores. over a long period it has been found that the mean and standard deviation for
every year sixth-grade students in ohio schools take proficiency tests. the list of sixth-grade reading score changes
1. you go to a store to get ice-cream. there are five types of cones three types of ice-cream and six kinds of
Severity of pain is influenced by the timing of pain interventions in sickle-cell crises and immediate intervention is better than either slightly delayed intervention or initiation at crisis stage.
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at most 65%.
At the 0.05 level, and assuming a normal distribution for the weights, examine the possibility that the new procedure is actually no better than the old one.
(a) Let random variable X, have an Exponential distribution with pdf : f(x) = βe-xβ, x > 0. Derive mgf of X, denoted as mX(t). Be sure to note the bounds on constant, t.
1. What arc the fundamental differences between a thermal and a photon (quantum) d etector?
How many books should be tested to estimate with 95% to within 0.1 lb, the average force required to break the binding? Assume that sd is known to be 0.8 lb.
The level of significance selected is 0.01 and 26 accounts are sampled. What is the critical value? Based on a sample size of 25?
A month is classified as extremely wet if the amount of rainfall is in the upper 10% for that month. How much precipitation must fall before a month of April is classified as extremely wet?
question what type of transformation has the same effect as the composition of a reflection in x2 and then in x6?a
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