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- A detailed discussion of your experimental design Hint: StatisticsA null hypothesis is one that states that the two variables in the hypothesis have no statistical significance. Susie's null hypothesis in this case would be something like this: There is no..
- A developmental psychologist is studying the amount of time young people spend daily on social media Hint: StatisticsProblem set 1.) A histogram is a bar-like graph that represents data that a range of bucket of outcomes along the x- axis in columns. The percentage or the number count in the data occurrenc..
- A developmental psychologist wants to test the extent to which birth order predicts the amount of attention Hint: StatisticsThere is a moderate negative linear relationship between birth order and time attending to child. This is because a downward trend is observed from scatterplot and points are plotted moderat..
- A disruption of a gene called DYXC1 on chromosome 15 for humans Hint: Statistics A two-way table is an approach to show frequencies or relative frequencies for two clear cut factors. One class is addressed by lines and a subsequent classification is addressed by se..
- A distribution of values is normal with a mean of 1493 Hint: Statistics Mean in statistics, is the total of all numbers in a distribution divided by the numbers provided. In simple terms, it is the sum divided by the count. Standard deviation is a measure ..
- A doctor claims that the standard deviation of systolic blood pressure is 12 mmHg Hint: Statistics1. popn sigma = 12n = 24sample sigma = 14critical value = upper one tailed 41.63839812lower one tailed 10.19571556two tailed alternative 38.96831129..
- A doctor in the USA wishes to investigate a possible association between race and severity of COVID-19 symptoms Hint: StatisticsA 95% confidence interval shows the range of values where one can be certain that it contains the true mean of the said population. The precision of this mean is higher with a larger sample ..
- A doubled-blind experiment was carried out to investigate the effect of the stimulant caffeine on performance on a simple physical task Hint: Statistics"The double-blind, placebo-controlled study is the best and most trustworthy type of research. The goal of this type of research is to debunk the power of persuasion. Both doctors and volunt..
- A drone company has a new app based programmable toy that they are planning to market Hint: StatisticsNet profit = sales revenue - COGS - production - Selling epenses - G&Awhere, Sales revenue = volume * selling priceCOGS = Volume * Cost per unitLog normal = LN(Selling epenses)..
- A drug manufacturer is developing a vaccine against a particular viral infection Hint: StatisticsConfidence intervals or hypothesis tests are similar in that they are both inferential means that rely on an approximated sampling distribution by using data from a sample to estimate a popu..
- A factory makes automotive components Hint: StatisticsP(machine A) = 40%P(machine B) = 35%P(machine C) = 25%P(Machine A is defective) = 3%P(Machine A is not defective) = 97%..
- A factory manufacturers machine parts. Every day, they produce 100 units, and sample 8 of them to test for defects Hint: "2)lambda = 10P(X=6) = =POISSON.DIST(6,10,FALSE)P(X=6) = 0.0630554585) ho: ..
- A factory producing electric lamp holders performs torque tests to conform Hint: StatisticsA maximum a posteriori probability is mainly estimated as an unknown quantity, that equals the mode of the subsequent distribution. The posterior can be used to obtain a point approximation ..
- A fair die is rolled until the first even outcome Hint: Statistics A Markov chain is a system in mathematics that experiences the transitions that are made from one state to the other in accordance with laid down probability rules. It uses rules such ..
- A family sociologist is interested in the difference in marital satisfaction between Hint: StatisticsA one-tailed test refers to a statistical test where the critical area of a frequency distribution is one-sided. This means that one of the sides is either greater than or less than a given ..