could you please see as attach the exercises

Exercise 1 Let be the distribution of the weekly wages of the employees of a factory "A" : 53'3\"! {$102} [5. 5i [5. 7t l [7: 8-5l [3-5, 9[ [9. 10l Number 120 190 240 100 50 of employees 1. Determine the statistical population and the character studied. 2. Draw the histogram of the numbers. 4. Determine the median. Exercise 2' The manager of a store selling convenience goods took a count of the number of items sold per day for a particular item that seems to be very popular. He recorded the sales for the months of March and April, which corresponds to 52 days of sales. The observations are as follows: \"In-manuaan 141181014128 5 7131216119111112121514 51499141311101112915 1. Calculate the average. 2. Determine the mode. 3. Determine the median. 4. Calculate the variance and standard deviation. Exercise 3 Suppose that when a signal is transmitted from location A, the signal received at B is normally distributed with the mean . A sample with the following nine values is received in B: 5 8.5 12 15 7 9 7.5 6.5 10.5 1. Estimate the interval for the mean value with a 90% condence level knowing that the variance ofthe signal in B is 2:". 2. Same question if the variance is unknown. Exercise 4 Grapes were weighed on 10 stumps taken at random from a vineyard and the following results in kilograms were obtained: ' " 2.4; 3.2 ; 3.6; 4.1;4.3 ; 4.7 ; 5.3 ; 5.4 ; 6.5; 6.9. Calculate the average mass and standard deviation of this sample Estimate the variance of the population from which these strains were extracted. Give a condence interval for the population mean at the 0.05 risk. Calculate the minimum number of strains that would have had to be studied for this interval to have a range of 1 kg assuming that the variance of the population is known and matches the variance estimated in 2. 95\".\"? If