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Write claim mathematically and id null and alternate hypothesis, find the critical values and id the rejection regions, find the standardized test statistic, and decide whether to reject or fail to reject the null hypothesis.
A medical researcher estimates that no more than 55% of US adults eat breakfast every day. In a random sample of 250 US adults, 56.4% say that they eat breakfast every day. At 0.01 level of significance, is there enough evidence to reject the researchers claim?
Ten percent of the members of a particular bowling league are widowed. If 20 bowling league members are selected at random, A) Find the probability that 10 or more will be widowed.
the blood pressure measurements of a single patient were taken by twelve different medical students and the results are
over the years grades in an introductory statistics course were recorded and showed the following proportionsa 0.20 b
a regional track championship has decided that they will invite the fastest 15 of runners in their region runners with
a study showed that 110 of 200 people say that their major source of news is tv. if the confidence interval is between
a sanitation department is interested in estimating the mean amount of garbage per bin for all bins in the city. in a
generate a chart or table that lists a variety of crimes types. your chart should include at least four types of crimes
The effectiveness of treating respiratory infections with herbal remedies was studied. "Days of fever" was used to measure effects. Among 356 children treated with herbal remedies, teh mean number of days with was 0.36,
In a study of 10 graduate students from a nurse education program, the average age of the group was 48.6 years and the standard deviation was 4.1 years. Assume the variable is normally distributed. Find the 95% confidence interval of the true mean..
the average magnesium concentration in ground water around metro city is u65.6 parts per millionppm with a standard
a. What is the probability that one hour of the lunch rush has no orders returned? b. The lunch rush lasts two hours. What is the probability that exactly six orders are returned during the lunch rush?
If the sugar mill receives 720 orders this year, calculate, with 90% confidence, the total number of pallets of sugar that they will ship during the year.
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