The compressive strength of concrete is being tested by a civil engineer. He tests 12 specimens a...
A civil engineer conducted a study to compare the compressive
strength of concrete obtained using four different aggregates. The
results of his experiment are given in the dataset file. a) Does
there seem to be differences between the average strengths of
concrete with different aggregates? Use ?=0.05. b) Identify the
differences and specify which aggregate would you recommend if
maximum compressive strength is desired. c) Check the required
assumption for the test used in part (a).
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Can
Anyone help me with these 7 questions?
Questions: Q1. A random sample has been taken from a normal distribution and the following confidence intervals constructed using the same data: (38.02, 61.98) and (39.95, 60.05) (a) What is the value of the sample mean? (b) One of these intervals is a 95% CI and the other is a 90% CI. Which one is the 95% CI? Why? Q2. A civil engineer is analyzing the compressive strength of concrete. Compressive strength...
Python Pandas, Series and DataFrame Question (NO Loops, No If Statements, No List Comprehensions) The file bank.csv contains data about bank customers. The last column ('Personal Loan') indicates whether or not the customer was approved for a personal loan or not. Write a function named loan_by_zip that accepts 3 parameters: a file name, a minimum number of records, and a percentage approval rate. The function should return a DataFrame of those zip codes for which we meet the minimum number...