📊 statistics

1. **State the problem:** We need to find the mean mass of a group of students given the frequency distribution of their masses in intervals. 2. **Formula for mean in grouped data:

1. **Problem Statement:** We are given a frequency distribution table and asked to find the assumed mean, median interval, estimate the mode, calculate the semi-interquartile range

1. The problem asks: If Mrs. Mackle has 70 students, how many chose vanilla based on the graph data? 2. From the graph description, the bar for Vanilla reaches slightly above 45 st

1. **State the problem:** We have weights of oranges normally distributed with mean $\mu=297$ g. Given that 79% weigh more than 289 g and 9.5% weigh more than 310 g, find the proba

1. **Problem 1: Heights of adult males** Given: Heights are normally distributed with mean $\mu=180$ cm and standard deviation $\sigma$ cm (unknown).

1. The problem asks to identify what is wrong with the survey conducted by StatCrunch. 2. The survey asked users if they expect to be better off than their parents, and 587 out of

1. The problem asks to identify what is wrong with a study financed by a fitness equipment company that showed lowered blood pressure after treadmill exercise. 2. The key issue is

1. The problem involves analyzing the relationship between Lemon Imports and Crash Fatality Rate using the given data points. 2. We can model the relationship with a linear equatio

1. **State the problem:** We have data for Lemon Imports and Crash Fatality Rate over five points. We want to understand the relationship between these two variables, possibly by f

1. **State the problem:** We are given body temperatures recorded at 8 AM and 12 AM for five subjects or days. We need to determine if there is a meaningful way to match each 8 AM

1. **State the problem:** We want to determine if the weight loss program is statistically and practically significant given that 7 subjects lost an average of 45 lbs and there is

1. **State the problem:** We want to determine if the weight loss program results are statistically significant based on the probability of obtaining the results by random chance.

1. The problem is to understand the given data values: 100, 90, 80, 70, 60, 50, 40, 30, 20, 10, 0, and relate them to the categories numérique, trigonométrie, and algèbre. 2. These

1. **Problem statement:** Construct a 95% confidence interval for the percentage of university students who own a laptop based on a sample of 400 students, where 340 own a laptop.

1. The problem asks for the range of the data set represented by the dot plot from years 1997 to 2009. 2. The range in a data set is calculated as the difference between the maximu

1. **Problem statement:** We have a class of 150 students with exam grades normally distributed with mean $\mu = 67$ and standard deviation $\sigma = 8.5$.

1. **Problem Statement:** We have two boxplots representing average points per game for two players over multiple seasons. We need to answer: a) Which player had the highest averag

1. **Problem Statement:** We are given data points $(x_i, y_i)$ and two alternative models to fit the data using Least Squares (LSQ):

1. **State the problem:** We are given a raw score $X=95$, a Z-score $Z=-1.5$, and a mean $\mu=110$. We need to find the standard deviation $\sigma$ of the normal distribution. 2.

1. **State the problem:** We are given a frequency distribution of scores and need to find the relative frequency for the fifth class interval, 180 - 184. 2. **Recall the formula f

1. The problem is to find the total number of organic snacks represented in the histogram by summing the frequencies for each sugar amount. 2. The frequencies given are: