Weather reports typically report the daily high and low temperatures, the average temperature for the day, and the record low and high temperatures for a given day. Given that today's high is 70, the...

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Weather reports typically report the daily high and low temperatures, the average temperature for the day, and the record low and high temperatures for a given day. Given that today's high is 70, the average high for this date is 60, the record low for this date is 30, and the record high for this date is 85, what additional information (i.e., descriptive statistic(s)) would you like to have in order to determine if the 70-degree temperature is a significant departure from the average temperature for that date of the year in that particular location? For this exercise, other variables such as humidity, other locations, other days of the year, etc. will not be considered.




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250words Q1) Weather reports typically report the daily high and low temperatures, the average temperature for the day, and the record low and high temperatures for a given day. Given that today's high is 70, the average high for this date is 60, the record low for this date is 30, and the record high for this date is 85, what additional information (i.e., descriptive statistic(s)) would you like to have in order to determine if the 70-degree temperature is a significant departure from the average temperature for that date of the year in that particular location? For this exercise, other variables such as humidity, other locations, other days of the year, etc. will not be considered. 250words Q2)How does a researcher determine the meaning of a score on a norm-referenced test such as an IQ test? Why is the use of standardized scores such as z-scores of value to researchers seeking to interpret test results? How might a researcher use a norm-referenced test to classify individuals as low, medium, or high on a particular characteristic that a test is intended to measure? Explain your reasoning. 250words Q3) How is sample size related to statistical tests and outcomes? Give a specific example. Why is it important to plan the sample size before collecting data? 4) Fill in the following for a possible study with one independent variable (IV) with two conditions/treatments and a dependent variable (DV) that is measured on a continuous scale (interval or ratio): Independent variable = ______________                  Condition A = ______________                    Condition B = ______________ Dependent variable = _______________ How do you know this DV is measured on a continuous scale? Now, how would you word the null hypothesis for your sample study? How would you word the alternative hypothesis for your sample study? What alpha level would you set to test your hypothesis? Why?



Answered Same DayDec 25, 2021

Answer To: Weather reports typically report the daily high and low temperatures, the average temperature for...

Robert answered on Dec 25 2021
129 Votes
Question 1
Based on the given information, it is apparent that the high which has been noticed is
70, which on an average historically it has been 85. In
order to test whether there is a
statistically significant deviation from the historical average, there is additional information
that would be required in order to conduct the relevant hypothesis testing. The two pieces of
information that would be required to conduct the testing would be standard deviation of the
historical high temperature coupled with the standard error of the same derived from the
number of observations.
These measures are required as they tend to enable the statistician to obtain the actual
distribution of data particularly with regards to deviation around the mean. The determination
of the data concentration is achieved through standard deviation. Typically a lower standard
deviation would indicate that the temperature data is quite concentrated. This would mean the
probability of occurrence of large deviations from mean would be less likely. The deviation
from mean is essentially expressed in terms of standard deviation which is used to ascertain
the probability of happening of an event.
The likely test in the given case would require defining of a null and alternative
hypothesis. The alternative hypothesis would support the claim that the deviation from the
historical high is significant. A z test statistic would be determined and based on the
corresponding p-value derived, a decision would be obtained if the null hypothesis is to be
rejected or...
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