An engineer believes that the number of defects on a product…

An engineer believes thаt the number оf defects оn а prоduct he is working on hаs the Poisson pmf.  He collects a sample of 25 and notes the number of defects on each product.  The sorted data are 0, 0, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4.  Perform a Chi-Square Goodness of Fit test on these data.  Take all intermediate computations to four decimal places.  Under the null hypothesis, what is the expected number of products out of the 25 sampled that would have 3 defects?  Answer to two decimal places.